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Research Peptides Database

Explore our comprehensive collection of research peptide guides. Each entry includes detailed information on mechanisms, research applications, and scientific references.

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Showing 83 peptides

Weight Loss / Metabolic
5-Amino-1MQ
5-Amino-1-Methylquinolinium

A small molecule NNMT inhibitor that promotes fat cell metabolism and may support weight loss without affecting the central nervous system.

Half-Life
~8-12 hours (estimated)
Purity
≥98%
Mol. Weight
173.21 Da
Form
Powder or capsule
Key Research Areas
Obesity and weight managementAdipose tissue metabolismNAD+ biology and aging
View Full Guide
Bone Health & Regeneration
Abaloparatide
Abaloparatide (PTHrP Analog 1-34)

An FDA-approved synthetic analog of parathyroid hormone-related protein (PTHrP) that promotes bone formation and reduces fracture risk in postmenopausal osteoporosis.

Half-Life
~1 hour
Purity
≥98% (pharmaceutical grade)
Mol. Weight
3,960.7 Da
Form
Clear, colorless solution in prefilled pen (3,120 mcg/1.56 mL)
Key Research Areas
Postmenopausal osteoporosis treatmentHigh fracture risk managementSequential osteoporosis therapy protocols
View Full Guide
Weight Loss
Adipotide
Adipotide (FTPP / Prohibitin-Targeting Peptide 1)

A chimeric proapoptotic peptide that selectively targets the vasculature of white adipose tissue, inducing fat cell death through blood supply disruption.

Half-Life
Not formally characterized; D-amino acid proapoptotic domain confers protease resistance
Purity
≥95% (research-grade synthesis)
Mol. Weight
~2,700 Da (estimated from composite sequence)
Form
Lyophilized powder (white)
Key Research Areas
Obesity and weight managementWhite adipose tissue vascular biologyProhibitin-mediated vascular targeting
View Full Guide
Weight Loss & Fat Metabolism
AOD-9604
Advanced Obesity Drug 9604 (Tyr-hGH Fragment 177-191)

A modified fragment of human growth hormone designed to stimulate fat metabolism without the growth-promoting effects of full HGH.

Half-Life
~5-7 minutes (plasma half-life; short duration necessitates strategic dosing)
Purity
≥98%
Mol. Weight
1,817.12 Da
Form
Lyophilized powder (white to off-white)
Key Research Areas
Obesity and weight managementFat metabolism and lipolysisCartilage regeneration and osteoarthritis
View Full Guide
Neuroprotection & Tissue Repair
ARA-290
ARA-290 (Cibinetide)

An 11-amino acid erythropoietin-derived peptide that activates the innate repair receptor for tissue protection without hematopoietic effects.

Half-Life
~2 minutes (plasma); prolonged tissue effects
Purity
≥98%
Mol. Weight
1,257.38 Da
Form
Lyophilized powder (white)
Key Research Areas
Diabetic peripheral neuropathySarcoidosis-associated small fiber neuropathyCorneal nerve damage and dry eye
View Full Guide
Cosmetic / Anti-Aging
Argireline
Argireline (Acetyl Hexapeptide-3)

A topical cosmetic peptide marketed as 'Botox in a jar' that reduces wrinkle appearance by inhibiting muscle contraction at the neuromuscular junction.

Half-Life
Variable (topical penetration dependent)
Purity
≥95% (cosmetic grade)
Mol. Weight
888.92 Da
Form
Powder for formulation or in finished cosmetic products
Key Research Areas
Cosmetic wrinkle reductionTopical peptide deliveryNeuromuscular junction modulation
View Full Guide
Healing & Recovery
BPC-157
Body Protection Compound-157 (Pentadecapeptide)

A gastric pentadecapeptide with remarkable tissue-protective and regenerative properties across multiple organ systems.

Half-Life
~4 hours (estimated from animal pharmacokinetic data)
Purity
≥98%
Mol. Weight
1,419.53 Da
Form
Lyophilized powder (white to off-white)
Key Research Areas
Tendon and ligament regenerationGastrointestinal healing and IBDMuscle injury recovery
View Full Guide
Metabolic
Cagrilintide
Cagrilintide (NN9838, AM833)

A long-acting amylin analog that suppresses appetite and enhances satiety—being developed by Novo Nordisk as a complement to GLP-1 drugs for superior weight loss.

Half-Life
~7 days (enabling once-weekly dosing)
Purity
Pharmaceutical grade (clinical trial material)
Mol. Weight
~4,000 Da
Form
Subcutaneous injection | Pre-filled pen (development)
Key Research Areas
Obesity treatment (monotherapy and combination)Type 2 diabetesCagriSema combination therapy
View Full Guide
Nootropic
Cerebrolysin
Cerebrolysin (FPE 1070)

A neuropeptide preparation derived from pig brain that mimics neurotrophic factors—used clinically in many countries for stroke, dementia, and traumatic brain injury.

Half-Life
Variable due to mixture composition; effects persist beyond clearance
Purity
Pharmaceutical grade (standardized to biological activity)
Mol. Weight
Complex mixture; peptides <10 kDa
Form
Injectable solution (IV or IM) | Ampoules of 1mL, 5mL, 10mL
Key Research Areas
Stroke recoveryTraumatic brain injury (TBI)Alzheimer's disease
View Full Guide
Growth Hormone Secretagogues
CJC-1295
CJC-1295 (Modified GRF 1-29, Tetrasubstituted GHRH 1-29)

A synthetic GHRH analog with enhanced stability and prolonged GH-releasing activity, available in both standard and DAC-conjugated forms.

Half-Life
~30 minutes (without DAC) | ~6-8 days (with DAC)
Purity
≥98%
Mol. Weight
3,367.97 Da (CJC-1295 without DAC)
Form
Lyophilized powder (white to off-white)
Key Research Areas
Adult growth hormone deficiencyAge-related GH decline and sarcopeniaHIV-associated lipodystrophy
View Full Guide
Anti-Inflammatory & Neuromodulation
Cortistatin
Cortistatin (CST-14 / CST-17 / CST-29)

A neuropeptide with potent anti-inflammatory and immunomodulatory properties, closely related to somatostatin but with distinct receptors and therapeutic potential.

Half-Life
~2-4 minutes (plasma), extended in tissue compartments
Purity
≥95%
Mol. Weight
1,634.9 Da (CST-14)
Form
Lyophilized powder (white to off-white)
Key Research Areas
Rheumatoid arthritis and autoimmune joint diseasesInflammatory bowel disease (IBD) and Crohn's diseaseMultiple sclerosis and neuroinflammation
View Full Guide
Nootropic / Cognitive
Dihexa
Dihexa (N-hexanoic-Tyr-Ile-(6) aminohexanoic amide)

An extremely potent cognitive-enhancing compound derived from angiotensin IV, studied for memory enhancement and potential neurodegenerative disease applications.

Half-Life
~12 hours (estimated)
Purity
≥98%
Mol. Weight
505.65 Da
Form
Lyophilized powder or solution
Key Research Areas
Alzheimer's disease and dementiaAge-related cognitive declineTraumatic brain injury recovery
View Full Guide
Sleep
DSIP
Delta Sleep-Inducing Peptide

A naturally occurring neuropeptide that promotes deep delta-wave sleep, stress resilience, and may help normalize disrupted sleep patterns.

Half-Life
~7-8 minutes (but effects persist hours)
Purity
≥98%
Mol. Weight
848.81 Da
Form
Lyophilized powder (white)
Key Research Areas
Sleep disorders and insomniaStress and anxietyChronic pain conditions
View Full Guide
Weight Loss & Metabolic
Dulaglutide
Dulaglutide (Trulicity)

An FDA-approved GLP-1 receptor agonist for type 2 diabetes and cardiovascular risk reduction, administered once weekly.

Half-Life
~5 days (approximately 120 hours)
Purity
Pharmaceutical grade (FDA-approved)
Mol. Weight
~63 kDa
Form
Solution for subcutaneous injection in pre-filled pen
Key Research Areas
Type 2 diabetes glycemic controlCardiovascular outcome improvementsWeight management in diabetic patients
View Full Guide
Anti-Aging
Epithalon
Epithalon (Epitalon/Epithalone)

A tetrapeptide that activates telomerase, the enzyme responsible for maintaining telomere length, potentially addressing one of the fundamental mechanisms of cellular aging.

Half-Life
~2-3 hours
Purity
≥98%
Mol. Weight
390.35 Da
Form
Lyophilized powder (white)
Key Research Areas
Telomere biology and cellular agingLongevity and lifespan extensionPineal gland function
View Full Guide
Weight Loss / Diabetes
Exenatide
Exenatide (Byetta, Bydureon)

The first GLP-1 receptor agonist approved for diabetes, derived from Gila monster venom, available in twice-daily and once-weekly formulations.

Half-Life
~2.4 hours (Byetta); ~2 weeks effective (Bydureon extended-release)
Purity
Pharmaceutical grade
Mol. Weight
4,186.6 Da
Form
Solution (Byetta) or extended-release suspension (Bydureon)
Key Research Areas
Type 2 diabetes managementGLP-1 receptor pharmacologyIncretin-based therapy research
View Full Guide
Muscle Growth
Follistatin 344
Follistatin 344 (FS344)

A myostatin inhibitor and activin-binding protein that promotes muscle growth by blocking the body's natural limiters on muscle development.

Half-Life
~6-12 hours (short; FS315 has longer half-life)
Purity
≥95%
Mol. Weight
~38 kDa (glycosylated)
Form
Lyophilized powder
Key Research Areas
Muscle wasting diseases (cachexia, sarcopenia)Muscular dystrophy treatmentAthletic performance research
View Full Guide
Skin & Anti-Aging
GHK-Cu
Copper Peptide GHK-Cu (Glycyl-L-Histidyl-L-Lysine:Copper)

A naturally occurring copper peptide with powerful skin regeneration, wound healing, and anti-aging properties backed by decades of research.

Half-Life
Topical: local activity | Injectable: estimated several hours
Purity
≥98%
Mol. Weight
403.93 Da (including copper)
Form
Lyophilized powder (blue due to copper) or topical formulations
Key Research Areas
Skin aging and rejuvenationWound healingHair loss and follicle regeneration
View Full Guide
Metabolic / Appetite
Ghrelin
Ghrelin (The Hunger Hormone)

The primary hunger hormone that stimulates appetite, GH release, and gastric motility—the natural ligand for the GHS receptor targeted by GHRPs.

Half-Life
~30 minutes
Purity
≥95%
Mol. Weight
3,370.9 Da
Form
Lyophilized powder
Key Research Areas
Appetite regulation and obesityCachexia and wasting syndromesAnorexia nervosa treatment
View Full Guide
Growth Hormone
GHRP-2
Growth Hormone Releasing Peptide-2 (Pralmorelin)

A potent growth hormone secretagogue that balances strong GH release with more moderate appetite stimulation than GHRP-6, making it a middle-ground option.

Half-Life
~15-60 minutes
Purity
≥98%
Mol. Weight
817.9 Da
Form
Lyophilized powder (white)
Key Research Areas
Growth hormone deficiency diagnosisGH secretagogue pharmacologyBody composition optimization
View Full Guide
Growth Hormone
GHRP-6
Growth Hormone Releasing Peptide-6

A potent growth hormone secretagogue known for robust GH release and significant appetite stimulation—the original GH-releasing peptide that started the secretagogue era.

Half-Life
~15-60 minutes
Purity
≥98%
Mol. Weight
873.01 Da
Form
Lyophilized powder (white)
Key Research Areas
Growth hormone deficiencyMuscle wasting conditionsAppetite stimulation in cachexia
View Full Guide
Anti-Aging & Longevity
Glutathione
L-Glutathione (γ-L-Glutamyl-L-Cysteinyl-Glycine)

The body's master antioxidant — a tripeptide critical for detoxification, oxidative stress defense, immune function, and cellular health.

Half-Life
~10–15 minutes (IV); intracellular half-life: 2–3 hours
Purity
≥98% (reduced form, GSH)
Mol. Weight
307.32 Da
Form
Lyophilized powder (white crystalline), oral capsules, liposomal liquid, IV solution
Key Research Areas
Oxidative stress and agingNeurodegenerative diseases (Parkinson's, Alzheimer's)Liver disease and detoxification
View Full Guide
Hormonal / PCT
Gonadorelin
Gonadorelin (GnRH, LHRH)

The natural gonadotropin-releasing hormone used to stimulate LH and FSH production, commonly used in fertility treatment and post-cycle therapy research.

Half-Life
~2-4 minutes (very short)
Purity
≥98%
Mol. Weight
1,182.29 Da
Form
Lyophilized powder
Key Research Areas
Post-cycle therapy (PCT)Male fertility preservation during TRTFemale fertility treatment
View Full Guide
Growth Hormone Secretagogues
Hexarelin
Hexarelin (Examorelin, HEX)

A potent synthetic growth hormone releasing hexapeptide with unique cardioprotective properties and the strongest GH release among GHRP family peptides.

Half-Life
~70 minutes (plasma)
Purity
≥98%
Mol. Weight
887.04 Da
Form
Lyophilized powder (white to off-white)
Key Research Areas
Growth hormone deficiency treatmentCardiac protection and heart failureAge-related muscle wasting (sarcopenia)
View Full Guide
Weight Loss & Metabolism
HGH Fragment 176-191
Human Growth Hormone Fragment 176-191 (HGH Frag)

The C-terminal fragment of human growth hormone responsible for fat metabolism, studied for its lipolytic activity without the growth-promoting effects of full-length HGH.

Half-Life
~15-30 minutes (estimated; rapid clearance typical of short peptide fragments)
Purity
≥98%
Mol. Weight
1,817.12 Da
Form
Lyophilized powder (white to off-white)
Key Research Areas
Obesity and body compositionLipolysis and fat metabolismAdipose tissue biology
View Full Guide
Longevity & Neuroprotection
Humanin
Humanin (HN, HNG)

A mitochondrial-derived peptide with cytoprotective and neuroprotective properties, showing promise in aging, Alzheimer's research, and metabolic health.

Half-Life
~30 minutes (native form); HNG analogs show extended half-life
Purity
≥95%
Mol. Weight
2,687.18 Da
Form
Lyophilized powder (white to off-white)
Key Research Areas
Alzheimer's disease and neurodegenerationAging and longevity researchType 2 diabetes and metabolic syndrome
View Full Guide
Growth & Muscle
IGF-1 DES
Des(1-3) Insulin-Like Growth Factor 1

A truncated, highly potent variant of IGF-1 that bypasses binding proteins for enhanced bioavailability and tissue-specific anabolic effects.

Half-Life
20-30 minutes (significantly shorter than IGF-1 LR3)
Purity
≥98%
Mol. Weight
7,371 Da
Form
Lyophilized powder (white to off-white)
Key Research Areas
Skeletal muscle hypertrophy and hyperplasiaSatellite cell biology and muscle regenerationIGF-1 receptor signaling mechanisms
View Full Guide
Growth Factors
IGF-1 LR3
Long R3 Insulin-Like Growth Factor-1 (LR3IGF-1)

A potent, extended-acting analog of IGF-1 with enhanced tissue availability and reduced binding protein affinity for research applications.

Half-Life
20-30 hours (estimated; significantly longer than native IGF-1's 10-20 minutes)
Purity
≥98%
Mol. Weight
9,111 Da
Form
Lyophilized powder (white to off-white)
Key Research Areas
Skeletal muscle hypertrophy mechanismsSatellite cell biology and muscle regenerationIGF-1 receptor signaling pathways
View Full Guide
Growth Hormone Secretagogues
Ipamorelin
Ipamorelin (Growth Hormone Secretagogue Pentapeptide)

A highly selective growth hormone secretagogue that stimulates GH release without significantly affecting cortisol, prolactin, or appetite hormones.

Half-Life
~2 hours (plasma half-life)
Purity
≥98%
Mol. Weight
711.85 Da
Form
Lyophilized powder (white to off-white)
Key Research Areas
Growth hormone deficiency and agingBody composition and metabolismBone health and osteoporosis prevention
View Full Guide
Sexual Health & Reproductive
Kisspeptin
Kisspeptin (Metastin, KISS1 Gene Product)

A neuropeptide that serves as the master regulator of the reproductive axis, controlling GnRH release and fertility in both sexes.

Half-Life
~4 minutes (IV) | ~27 minutes (SC)
Purity
≥98%
Mol. Weight
5,847.7 Da (Kisspeptin-54)
Form
Lyophilized powder (white)
Key Research Areas
Female infertility and IVF protocolsMale hypogonadism and testosterone deficiencyFunctional hypothalamic amenorrhea
View Full Guide
Hormonal
Kisspeptin-10
Kisspeptin-10 (Metastin 45-54)

A master regulator of the reproductive hormone system that triggers natural LH and testosterone release, with potential applications in fertility, hormone optimization, and PCT.

Half-Life
~28 minutes (relatively short)
Purity
≥98%
Mol. Weight
1,302.41 Da
Form
Lyophilized powder
Key Research Areas
Fertility and reproductive medicineTestosterone optimizationHypogonadism treatment
View Full Guide
Anti-Inflammatory & Gut Health
KPV
Lysine-Proline-Valine (Alpha-MSH C-Terminal Tripeptide)

A potent anti-inflammatory tripeptide derived from alpha-MSH with remarkable effects on inflammatory bowel conditions and immune modulation.

Half-Life
Variable by route; oral formulations designed for gut-targeted delivery
Purity
≥98%
Mol. Weight
356.46 Da
Form
Lyophilized powder (white)
Key Research Areas
Inflammatory bowel disease (IBD)Ulcerative colitis and Crohn's diseaseContact dermatitis and skin inflammation
View Full Guide
Anti-Aging / Longevity
L-Carnosine
L-Carnosine (β-Alanyl-L-Histidine)

A naturally-occurring dipeptide with potent anti-glycation, antioxidant, and anti-aging properties found in high concentrations in muscle and brain tissue.

Half-Life
~20 minutes to several hours (tissue-dependent; rapidly degraded by carnosinase in plasma)
Purity
≥99%
Mol. Weight
226.23 Da
Form
Crystalline powder (white) | Capsules and tablets widely available
Key Research Areas
Aging and longevityGlycation and AGE formationNeuroprotection and cognitive decline
View Full Guide
Therapeutic
Lanreotide
Lanreotide (Somatuline Depot)

A long-acting somatostatin analog for acromegaly and neuroendocrine tumors—with the convenience of self-injectable depot formulation.

Half-Life
~23-30 days (extended release depot formulation)
Purity
Pharmaceutical grade
Mol. Weight
1,096.3 Da
Form
Pre-filled syringe for deep subcutaneous injection | 60mg, 90mg, 120mg doses
Key Research Areas
Acromegaly treatmentGastroenteropancreatic neuroendocrine tumorsCarcinoid syndrome
View Full Guide
Gastrointestinal Peptides
Linaclotide
Linaclotide (Linzess/Constella)

An FDA-approved 14-amino acid peptide that activates guanylate cyclase-C receptors to treat irritable bowel syndrome with constipation (IBS-C) and chronic idiopathic constipation.

Half-Life
3-4 minutes (rapidly degraded in GI tract; minimal systemic exposure)
Purity
Pharmaceutical grade
Mol. Weight
1,526.8 Da
Form
Oral capsules (72 mcg, 145 mcg, 290 mcg)
Key Research Areas
Irritable bowel syndrome with constipation (IBS-C)Chronic idiopathic constipation (CIC)Functional constipation in pediatric patients
View Full Guide
Weight Loss & Metabolic
Liraglutide
Liraglutide (GLP-1 Receptor Agonist)

An FDA-approved GLP-1 receptor agonist used for type 2 diabetes and chronic weight management, with extensive clinical trial evidence supporting its metabolic benefits.

Half-Life
~13 hours (enabling once-daily dosing)
Purity
≥98%
Mol. Weight
3,751.2 Da
Form
Solution for subcutaneous injection (6 mg/mL in pre-filled pen)
Key Research Areas
Type 2 diabetes managementChronic weight management and obesityCardiovascular risk reduction
View Full Guide
Weight Loss & Metabolic
Lixisenatide
Lixisenatide (Adlyxin/Lyxumia)

An FDA-approved GLP-1 receptor agonist used for type 2 diabetes with unique pharmacokinetics favoring postprandial glucose control.

Half-Life
2-4 hours (short-acting)
Purity
Pharmaceutical grade (prescription medication)
Mol. Weight
4,858.49 Da
Form
Solution for subcutaneous injection (pre-filled pen)
Key Research Areas
Type 2 diabetes glycemic controlPostprandial hyperglycemia managementCombination therapy with basal insulin
View Full Guide
Immune & Antimicrobial
LL-37
LL-37 (Cathelicidin Antimicrobial Peptide)

A human host defense peptide with broad-spectrum antimicrobial activity and powerful immunomodulatory properties for wound healing and infection control.

Half-Life
~15-30 minutes (serum); longer in tissue compartments
Purity
≥95%
Mol. Weight
4,493.33 Da
Form
Lyophilized powder (white)
Key Research Areas
Antibiotic-resistant bacterial infectionsChronic wound healingSkin disorders (psoriasis, rosacea, atopic dermatitis)
View Full Guide
Skin Health
Matrixyl
Palmitoyl Pentapeptide-4 (Pal-KTTKS)

A collagen-boosting signal peptide widely used in anti-aging skincare to reduce wrinkles and improve skin firmness.

Half-Life
Topical application; systemic half-life not applicable
Purity
≥95% (cosmetic grade)
Mol. Weight
802.05 Da (free pentapeptide) / ~1,019 Da (palmitoylated form)
Form
White to off-white powder; typically formulated in serums, creams, and lotions
Key Research Areas
Anti-aging and wrinkle reductionCollagen stimulation mechanismsWound healing acceleration
View Full Guide
Tanning & Skin Protection
Melanotan I
Afamelanotide ([Nle4, D-Phe7]-α-MSH)

An FDA-approved synthetic melanocortin peptide analog that stimulates melanogenesis for photoprotection, with clinical applications in erythropoietic protoporphyria and vitiligo research.

Half-Life
~30 minutes (IV); sustained release over 10 days via subcutaneous implant
Purity
≥98%
Mol. Weight
1,646.85 Da
Form
Lyophilized powder (white) or subcutaneous implant (Scenesse 16 mg)
Key Research Areas
Erythropoietic protoporphyria (EPP) phototoxicity preventionVitiligo repigmentation therapyPolymorphous light eruption (PMLE) prevention
View Full Guide
Tanning / Photoprotection
Melanotan I
Melanotan I (Afamelanotide)

A synthetic melanocortin peptide that stimulates melanin production, developed for photoprotection and approved for treating erythropoietic protoporphyria (EPP).

Half-Life
~30 minutes (short; implant formulation provides sustained release)
Purity
≥98%
Mol. Weight
1,646.85 Da
Form
Lyophilized powder or subcutaneous implant (pharmaceutical)
Key Research Areas
Erythropoietic protoporphyria (EPP)Photoprotection and sun damage preventionSkin cancer prevention
View Full Guide
Tanning & Pigmentation
Melanotan II
Melanotan II (MT-2)

A synthetic peptide that stimulates melanin production for skin tanning while also producing notable effects on libido and appetite suppression.

Half-Life
~1 hour (but melanin changes persist much longer)
Purity
≥98%
Mol. Weight
1,024.18 Da
Form
Lyophilized powder (white to off-white)
Key Research Areas
Melanogenesis and skin pigmentationUV protection mechanismsSkin cancer prevention (original research goal)
View Full Guide
Tanning & Sexual Health
Melanotan II
Melanotan II (MT-2)

A synthetic melanocortin peptide analog that stimulates melanin production for skin pigmentation and activates sexual arousal pathways.

Half-Life
~1-2 hours (biological effects may persist longer)
Purity
≥98%
Mol. Weight
1,024.18 Da
Form
Lyophilized powder (white to off-white)
Key Research Areas
Skin pigmentation and photoprotectionSexual dysfunction and hypoactive desire disordersErectile dysfunction treatment
View Full Guide
Recovery / Muscle Growth
MGF
Mechano Growth Factor (IGF-1Ec)

A splice variant of IGF-1 released in response to muscle damage, promoting satellite cell activation and muscle repair.

Half-Life
~5-7 minutes (very short; PEG-MGF has longer half-life)
Purity
≥98%
Mol. Weight
~2,867 Da (synthetic MGF peptide)
Form
Lyophilized powder (white)
Key Research Areas
Muscle injury and repairExercise-induced muscle damage recoverySatellite cell biology
View Full Guide
Growth Hormone
MK-677
Ibutamoren Mesylate (MK-677)

An orally-active growth hormone secretagogue that mimics ghrelin signaling to increase GH and IGF-1 levels without injections.

Half-Life
~24 hours
Purity
≥98%
Mol. Weight
624.77 Da (mesylate salt)
Form
White to off-white crystalline powder or capsules
Key Research Areas
Age-related GH decline (somatopause)Muscle wasting and sarcopeniaBone density and osteoporosis
View Full Guide
GH Secretagogue
Modified GRF 1-29
Modified GRF (1-29) / CJC-1295 without DAC / Tetrasubstituted GRF

A modified growth hormone-releasing hormone analog with enhanced stability, commonly paired with GHRPs for synergistic GH release.

Half-Life
~30 minutes
Purity
≥98%
Mol. Weight
3,367.9 Da
Form
Lyophilized powder (white)
Key Research Areas
Growth hormone optimizationBody composition researchAnti-aging and longevity
View Full Guide
Metabolic / Longevity
MOTS-c
Mitochondrial Open Reading Frame of the 12S rRNA Type-C

A mitochondria-derived peptide with profound effects on metabolism, exercise capacity, and aging—a rising star in longevity research.

Half-Life
~4-6 hours (estimated)
Purity
≥98%
Mol. Weight
2,174.69 Da
Form
Lyophilized powder (white)
Key Research Areas
Metabolic syndrome and type 2 diabetesObesity and weight loss mechanismsExercise physiology and performance
View Full Guide
Nootropic / Anxiolytic
N-Acetyl Selank
N-Acetyl Selank Amidate (NASA Selank)

An enhanced variant of Selank with improved stability and bioavailability, offering anxiolytic and cognitive effects through GABA modulation.

Half-Life
Extended compared to standard Selank
Purity
≥98%
Mol. Weight
~900 Da
Form
Lyophilized powder or nasal spray solution
Key Research Areas
Anxiety and stress disordersCognitive enhancementGABA system modulation
View Full Guide
Nootropic / Cognitive
NA-Semax Amidate
N-Acetyl Semax Amidate (NASA)

An enhanced variant of Semax with improved stability and potency, offering cognitive enhancement and neuroprotective effects.

Half-Life
~Several hours (longer than standard Semax)
Purity
≥98%
Mol. Weight
~920 Da
Form
Lyophilized powder or nasal spray solution
Key Research Areas
Cognitive enhancementNeuroprotection and brain healthBDNF and neuroplasticity
View Full Guide
Metabolic & Appetite
Nesfatin-1
Nesfatin-1 (NUCB2-derived Satiety and Fat-Influencing Protein)

An 82-amino acid peptide derived from nucleobindin-2 that regulates appetite, metabolism, and energy homeostasis through hypothalamic signaling.

Half-Life
~10-20 minutes (estimated from animal studies)
Purity
≥95%
Mol. Weight
9,716 Da
Form
Lyophilized powder (white)
Key Research Areas
Obesity and metabolic syndromeType 2 diabetes and glucose regulationEating disorders and appetite control
View Full Guide
Neuroactive Peptides
Neuropeptide Y
Neuropeptide Y (NPY)

A 36-amino acid neuropeptide that serves as one of the most abundant signaling molecules in the brain, regulating appetite, stress response, anxiety, and circadian rhythms.

Half-Life
20-30 minutes (plasma); varies by route and form
Purity
≥95%
Mol. Weight
4,253.69 Da
Form
Lyophilized powder (white to off-white)
Key Research Areas
Obesity and metabolic syndromeAnxiety disorders and PTSDStress resilience mechanisms
View Full Guide
Therapeutic
Octreotide
Octreotide (Sandostatin)

A synthetic somatostatin analog used to treat acromegaly, carcinoid tumors, and severe diarrhea—one of the most clinically important peptide drugs in endocrinology.

Half-Life
90 minutes (immediate release) | 28 days between LAR injections
Purity
Pharmaceutical grade
Mol. Weight
1,019.3 Da
Form
Subcutaneous injection (immediate release) | Intramuscular depot (Sandostatin LAR) | Generic versions available
Key Research Areas
Acromegaly treatmentNeuroendocrine tumors (carcinoid, VIPoma, glucagonoma)Carcinoid syndrome symptom control
View Full Guide
Neuromodulation
Orexin-A
Orexin-A (Hypocretin-1)

A neuropeptide critical for wakefulness, appetite regulation, and energy homeostasis with therapeutic implications for narcolepsy and metabolic disorders.

Half-Life
~30 minutes (plasma)
Purity
≥95%
Mol. Weight
3,562 Da
Form
Lyophilized powder (white)
Key Research Areas
Narcolepsy and sleep disordersObesity and metabolic syndromeDrug addiction and reward circuits
View Full Guide
Hormonal & Social
Oxytocin
Oxytocin (The Bonding Hormone)

A nine-amino acid neuropeptide hormone involved in social bonding, trust, anxiety reduction, and reproductive functions.

Half-Life
3-5 minutes (plasma) | Intranasal effects last 1-2 hours
Purity
≥98%
Mol. Weight
1,007.19 Da
Form
Lyophilized powder (white) or nasal spray solution
Key Research Areas
Autism spectrum disorder interventionsSocial anxiety and phobia treatmentPost-traumatic stress disorder (PTSD)
View Full Guide
Nootropics & Cognitive
P21
P21 (CNTF-derived Nootropic Peptide)

A synthetic 21-amino acid peptide derived from Ciliary Neurotrophic Factor (CNTF) that promotes neurogenesis and cognitive enhancement.

Half-Life
~30-60 minutes (estimated from animal pharmacokinetic data)
Purity
≥98%
Mol. Weight
~2,400 Da (estimated)
Form
Lyophilized powder (white to off-white)
Key Research Areas
Neurogenesis and neural stem cell differentiationAge-related cognitive declineMemory and learning enhancement
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Neuroprotection
PACAP-38
Pituitary Adenylate Cyclase-Activating Polypeptide-38

A 38-amino acid neuropeptide with potent neuroprotective, anti-inflammatory, and regenerative properties across multiple organ systems.

Half-Life
~2-5 minutes (extremely short due to DPP-IV degradation)
Purity
≥98%
Mol. Weight
4,534.30 Da
Form
Lyophilized powder (white to off-white)
Key Research Areas
Traumatic brain injury and strokeNeurodegenerative diseases (Alzheimer's, Parkinson's)Migraine pathophysiology and treatment
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Muscle Growth
PEG-MGF
Pegylated Mechano Growth Factor

A pegylated variant of IGF-1 splice variant with extended half-life, studied for localized muscle repair and hypertrophy signaling.

Half-Life
Several hours to days (pegylated form) vs ~5-7 minutes (native MGF)
Purity
≥98%
Mol. Weight
~2,867 Da (base MGF) + PEG moiety (varies by formulation)
Form
Lyophilized powder (white to off-white)
Key Research Areas
Muscle injury recovery and regenerationSatellite cell biology and myogenesisAge-related sarcopenia
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Metabolic
Pemvidutide
Pemvidutide (ALT-801)

A GLP-1/glucagon dual agonist designed for better body composition—promoting fat loss while preserving muscle mass during weight loss.

Half-Life
~5-7 days (once-weekly dosing)
Purity
Pharmaceutical grade (clinical trial material)
Mol. Weight
~4,100 Da
Form
Subcutaneous injection | Pre-filled pen (development)
Key Research Areas
Obesity with focus on body compositionNASH/MASH (metabolic liver disease)Liver fibrosis
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Metabolic & Weight Management
Peptide YY
Peptide YY (PYY / Peptide Tyrosine Tyrosine)

A gut-derived satiety hormone that reduces appetite and regulates energy balance, with significant research implications for obesity treatment.

Half-Life
~10-30 minutes (varies by form; PYY3-36 slightly longer)
Purity
≥95%
Mol. Weight
4,049.55 Da
Form
Lyophilized powder (white to off-white)
Key Research Areas
Obesity and weight managementAppetite regulation and satiety signalingType 2 diabetes and metabolic syndrome
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Nootropics & Cognitive
Pinealon
Pinealon (Glu-Asp-Arg / EDR Tripeptide)

A synthetic bioregulatory tripeptide that targets pineal gland and central nervous system function, with neuroprotective and geroprotective properties.

Half-Life
~2–5 minutes (estimated; rapidly internalized into target cells)
Purity
≥95%
Mol. Weight
404.37 Da
Form
Lyophilized powder (white) or oral capsules
Key Research Areas
Neuroprotection and neurodegenerationPineal gland function and melatonin regulationAging and geroprotection
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Metabolic / Diabetes
Pramlintide
Pramlintide Acetate (Symlin)

An FDA-approved synthetic amylin analog that complements insulin therapy by slowing gastric emptying, reducing glucagon secretion, and enhancing satiety in diabetes management.

Half-Life
~48 minutes
Purity
Pharmaceutical grade
Mol. Weight
3,949.4 Da
Form
Solution in pre-filled pen (Symlin, SymlinPen)
Key Research Areas
Type 1 diabetes as adjunct to insulinType 2 diabetes with mealtime insulin usePostprandial hyperglycemia management
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Sexual Health
PT-141
PT-141 (Bremelanotide)

An FDA-approved melanocortin receptor agonist that acts centrally in the brain to promote sexual arousal and desire.

Half-Life
~2.7 hours
Purity
≥98%
Mol. Weight
1,025.2 Da
Form
Lyophilized powder (white to off-white) or pre-filled autoinjector (Vyleesi)
Key Research Areas
Female hypoactive sexual desire disorder (HSDD)Male erectile dysfunctionSexual arousal disorders
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Hair Restoration & Regeneration
PTD-DBM
Protein Transduction Domain-Dishevelled Binding Motif

A cell-penetrating peptide targeting the Wnt/β-catenin pathway to activate hair follicle stem cells and promote hair regrowth.

Half-Life
Not well characterized (topical application)
Purity
≥95%
Mol. Weight
~2,500 Da (estimated)
Form
Lyophilized powder (white to off-white)
Key Research Areas
Androgenetic alopecia (male/female pattern hair loss)Hair follicle stem cell biologyWnt signaling pathway modulation
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Metabolic
Retatrutide
LY3437943 (Triple GLP-1/GIP/Glucagon Receptor Agonist)

A groundbreaking triple receptor agonist achieving unprecedented 24.2% weight loss in clinical trials, representing the next evolution in obesity pharmacotherapy.

Half-Life
~6 days (approximately 144 hours)
Purity
≥98% (pharmaceutical grade in clinical trials)
Mol. Weight
~4,800 Da
Form
Lyophilized powder for reconstitution
Key Research Areas
Obesity and chronic weight managementType 2 diabetes mellitus and glycemic controlMetabolic dysfunction-associated steatohepatitis (MASH/NASH)
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Nootropics & Cognitive
Selank
Selank (TP-7 / Selanc)

A synthetic anxiolytic peptide derived from tuftsin, developed in Russia for anxiety reduction, cognitive enhancement, and immunomodulation.

Half-Life
~2-3 minutes (native); extended activity duration 3-6 hours
Purity
≥98%
Mol. Weight
751.9 Da
Form
Lyophilized powder (white to off-white) or intranasal spray
Key Research Areas
Generalized anxiety disorderCognitive enhancement and memoryImmune system modulation
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Metabolic
Semaglutide
Semaglutide (GLP-1 Receptor Agonist)

A GLP-1 receptor agonist that mimics natural gut hormones to reduce appetite, slow digestion, and support significant weight loss results.

Half-Life
~7 days (168 hours)
Purity
≥98%
Mol. Weight
4,113.58 Da
Form
Lyophilized powder
Key Research Areas
Weight ManagementType 2 DiabetesCardiovascular Health
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Nootropics & Cognitive
Semax
Semax (ACTH 4-10 Analog / Methionyl-Glutamyl-Histidyl-Phenylalanyl-Prolyl-Glycyl-Proline)

A synthetic heptapeptide nootropic derived from ACTH with neuroprotective, cognitive-enhancing, and neurorestorative properties.

Half-Life
~2-3 minutes (intranasal bioavailability extends effective duration)
Purity
≥98%
Mol. Weight
813.93 Da
Form
Lyophilized powder (white) or ready-to-use nasal spray solution
Key Research Areas
Stroke recovery and cerebrovascular diseaseCognitive enhancement and nootropic effectsNeurodegenerative disease prevention
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Growth Hormone Secretagogues
Sermorelin
Sermorelin Acetate (GHRH 1-29)

A synthetic 29-amino acid peptide analog of growth hormone-releasing hormone (GHRH) that stimulates natural GH production from the pituitary gland.

Half-Life
10-20 minutes
Purity
≥98%
Mol. Weight
3,358 Da
Form
Lyophilized powder (white to off-white)
Key Research Areas
Pediatric growth hormone deficiency treatmentAdult-onset growth hormone deficiencyAge-related growth hormone decline
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Weight Management
Setmelanotide
Setmelanotide (Imcivree) - Melanocortin-4 Receptor Agonist

An FDA-approved MC4R agonist peptide for treating obesity caused by rare genetic disorders affecting the leptin-melanocortin pathway.

Half-Life
~11 hours (enabling once-daily dosing)
Purity
Pharmaceutical grade (FDA-approved formulation)
Mol. Weight
1,117.3 Da
Form
Solution for subcutaneous injection (10 mg/mL multi-dose vial)
Key Research Areas
Genetic obesity syndromes (POMC, PCSK1, LEPR deficiency)Bardet-Biedl syndrome obesityHypothalamic obesity
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Skin Health & Cosmetic
SNAP-8
Acetyl Octapeptide-3 (Acetyl Glutamyl Heptapeptide-1)

An 8-amino acid peptide that mimics the N-terminus of SNAP-25 to reduce muscle contractions and soften expression lines without injections.

Half-Life
Variable (topical - dependent on formulation and skin penetration)
Purity
≥95% (cosmetic grade)
Mol. Weight
1,075.16 Da
Form
White to off-white powder | Commonly formulated in serums and creams
Key Research Areas
Dynamic wrinkle reductionCosmetic anti-aging formulationsNeuromuscular junction modulation
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Mitochondrial
SS-31 / Elamipretide
SS-31 (Elamipretide, Bendavia, MTP-131)

A mitochondria-targeting peptide that protects cells from oxidative damage and restores energy production—in clinical trials for heart failure and mitochondrial diseases.

Half-Life
~1-2 hours in plasma (but concentrates in mitochondria for prolonged effect)
Purity
≥98% for research applications
Mol. Weight
639.8 Da
Form
Lyophilized powder | Subcutaneous injection in clinical trials
Key Research Areas
Primary mitochondrial myopathiesHeart failure with preserved ejection fraction (HFpEF)Ischemia-reperfusion injury
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Weight Loss & Metabolic
Survodutide
Survodutide (BI 456906)

A dual GLP-1 and glucagon receptor agonist showing significant weight loss and liver fat reduction in clinical trials, positioned as a next-generation obesity and MASH therapeutic.

Half-Life
~6-7 days (supporting once-weekly dosing)
Purity
Pharmaceutical grade (clinical-stage compound)
Mol. Weight
~4,200 Da (estimated)
Form
Solution for subcutaneous injection (pre-filled pen in clinical trials)
Key Research Areas
Obesity and weight managementMetabolic dysfunction-associated steatohepatitis (MASH/NASH)Metabolic dysfunction-associated steatotic liver disease (MASLD)
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Healing & Recovery
TB-500
Thymosin Beta-4 Fragment (Ac-SDKP)

A synthetic peptide fragment promoting tissue repair, reduced inflammation, and accelerated recovery from muscle, tendon, and ligament injuries.

Half-Life
~2 weeks (due to tissue binding and slow release)
Purity
≥98%
Mol. Weight
4,963 Da
Form
Lyophilized powder (white)
Key Research Areas
Muscle injury recoveryTendon and ligament repairCardiac tissue regeneration
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Bone / Hormonal
Teriparatide
Teriparatide (Forteo, PTH 1-34)

An FDA-approved parathyroid hormone analog used to treat osteoporosis by stimulating new bone formation rather than just preventing bone loss.

Half-Life
~1 hour
Purity
Pharmaceutical grade
Mol. Weight
4,117.8 Da
Form
Solution in pre-filled injection pen
Key Research Areas
Osteoporosis treatmentBone fracture healingOsteogenesis imperfecta
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Growth Hormone
Tesamorelin
Tesamorelin Acetate (TH9507)

An FDA-approved growth hormone-releasing hormone analog that reduces visceral fat accumulation and stimulates natural GH production.

Half-Life
26-38 minutes
Purity
≥98%
Mol. Weight
5,135.87 Da
Form
Lyophilized powder (white to off-white)
Key Research Areas
HIV-associated lipodystrophy (FDA-approved)Non-alcoholic fatty liver disease (NAFLD)Cognitive function in aging and HIV
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Immune Support & Anti-Aging
Thymalin
Thymalin (Thymic Polypeptide Bioregulator)

A thymic polypeptide bioregulator with immunomodulatory and geroprotective properties, developed from decades of Russian peptide bioregulation research.

Half-Life
~30 minutes (dipeptide component); biological effects persist 24–72 hours due to gene expression modulation
Purity
Standardized pharmaceutical extract (Russian Pharmacopoeia)
Mol. Weight
Polypeptide complex (1,000–10,000 Da range); primary dipeptide component Glu-Trp: 333.34 Da
Form
Lyophilized powder for injection (white to off-white)
Key Research Areas
Immunosenescence and thymic involutionPeptide bioregulation of agingPost-surgical immune restoration
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Immune Modulation
Thymopentin
Thymopentin (TP-5, Timunox)

A synthetic pentapeptide derived from thymopoietin that modulates T-cell function and enhances immune system regulation.

Half-Life
~30-60 minutes (plasma)
Purity
≥98%
Mol. Weight
679.77 Da
Form
Lyophilized powder (white to off-white)
Key Research Areas
Primary immunodeficiency disordersHIV/AIDS immune reconstitutionCancer immunotherapy support
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Healing & Recovery
Thymosin Alpha 1
Thymosin Alpha 1 (Tα1)

Thymosin Alpha 1 is a synthetic 28–amino acid peptide studied for its immunomodulatory effects, supporting host defense, tissue recovery, and immune balance in diverse experimental models.

Half-Life
~2 hours (route- and species-dependent)
Purity
≥98%
Mol. Weight
3,108 Da
Form
Lyophilized powder
Key Research Areas
Immune modulation and host defenseChronic viral hepatitis and other persistent infectionsOncology and immunotherapy adjuvant research
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Regenerative
Thymosin Beta-4
Thymosin Beta-4 (Tβ4)

A 43-amino acid protein that orchestrates tissue repair, cell migration, and wound healing—the full molecule behind TB-500's regenerative reputation.

Half-Life
Research estimates suggest relatively rapid clearance; TB-500 fragment has ~2-3 hour half-life
Purity
≥98% for research applications
Mol. Weight
4,921 Da
Form
Lyophilized powder | Injectable solution for clinical research
Key Research Areas
Wound healing and tissue repairCardiac regeneration post-MICorneal healing and dry eye
View Full Guide
Immune & Anti-Aging
Thymulin
Facteur Thymique Sérique (FTS, Serum Thymic Factor)

A zinc-dependent thymic nonapeptide essential for T-cell maturation, immune regulation, and emerging anti-aging research.

Half-Life
~15-20 minutes (serum)
Purity
≥98%
Mol. Weight
857.9 Da
Form
Lyophilized powder (white)
Key Research Areas
Immunosenescence and agingT-cell development and functionAutoimmune disease modulation
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Metabolic
Tirzepatide
Tirzepatide (GIP/GLP-1 Dual Receptor Agonist)

A dual-action incretin that has achieved unprecedented weight loss results in clinical trials, now FDA-approved as Mounjaro and Zepbound.

Half-Life
~5 days (allowing once-weekly dosing)
Purity
Pharmaceutical grade
Mol. Weight
4,813.45 Da
Form
Pre-filled injection pen (Mounjaro/Zepbound)
Key Research Areas
Obesity treatmentType 2 diabetes managementMetabolic syndrome
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Immune & Gut Health
VIP
Vasoactive Intestinal Peptide

A 28-amino acid neuropeptide with potent anti-inflammatory, immunomodulatory, and neuroprotective properties being researched for autoimmune conditions and gut disorders.

Half-Life
~1-2 minutes (native form); stabilized analogs extend to hours
Purity
≥95%
Mol. Weight
3,326.26 Da
Form
Lyophilized powder (white)
Key Research Areas
Inflammatory bowel disease (Crohn's, ulcerative colitis)Multiple sclerosis and neuroinflammationRheumatoid arthritis and joint inflammation
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Bone Health & Growth
Vosoritide
Vosoritide (Voxzogo) — C-Type Natriuretic Peptide Analog

An FDA-approved modified C-type natriuretic peptide (CNP) analog that promotes bone growth by counteracting FGFR3 signaling in children with achondroplasia.

Half-Life
~25-30 minutes (extended vs native CNP: 2-3 min)
Purity
Pharmaceutical grade (Voxzogo)
Mol. Weight
4,105 Da (39 amino acids)
Form
Lyophilized powder for reconstitution (solution for injection)
Key Research Areas
Achondroplasia treatment in childrenEndochondral ossification and bone growthFGFR3 signaling modulation
View Full Guide

Understanding Research Peptides

Research peptides are short chains of amino acids that play crucial roles in biological research. They are used extensively in scientific studies to understand cellular mechanisms, develop new therapies, and explore potential applications in various fields of medicine.

Our database includes detailed information on the most researched peptides, including healing peptides like TB-500 and BPC-157, growth hormone secretagogues like CJC-1295 and Ipamorelin, and many more. Each entry provides comprehensive data on molecular properties, research applications, and scientific references.

Categories of Research Peptides

  • Healing & Recovery: Peptides studied for tissue repair, wound healing, and regeneration.
  • Growth Hormone: Secretagogues and analogs that influence GH pathways.
  • Cognitive: Peptides researched for neurological and cognitive effects.
  • Metabolic: Compounds studied for their effects on metabolism and body composition.
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