Peptide Encyclopedia

Scientific reference for peptide mechanisms of action, molecular data, and peer-reviewed publications.

Library

48 peptides

25+ peptides with detailed scientific information, mechanisms of action, and PubMed references. A free resource for researchers.

5-Amino-1MQ

5-Amino-1MQ is a new metabolic peptide studied for improved energy metabolism.

C11H10N2

Adipotide

Adipotide (FTPP)

Fat-Targeting Pro-apoptotic Peptide from MD Anderson. Selectively destroys white adipose tissue endothelium via prohibitin receptor binding.

AOD-9604

AOD-9604 is a growth hormone fragment focused entirely on fat metabolism — without hyperglycemia and without affecting IGF-1.

C78H123N23O23S2

ARA-290

ARA-290 (Cibinetide)

ARA-290 is an innovative peptide for nerve regeneration and neuropathic pain reduction.

C46H77N13O14

Argireline

Argireline (Acetyl Hexapeptide-8)

Synthetic hexapeptide mimicking N-terminus of SNAP-25. Botox-mimetic effect — reduces expression wrinkles by blocking acetylcholine release.

C34H60N14O12S

BPC-157

Body Protection Compound 157

BPC-157 is among the most researched peptides for regeneration. Accelerates recovery of tendons, joints and GI tissue.

C62H98N16O22

Cagrilintide

Cagrilintide (long-acting amylin)

Long-acting amylin analog developed by Novo Nordisk. Combined with Semaglutide (CagriSema) shows −22% body weight in Phase 3 REDEFINE-1 (2025).

C166H261N51O50

Cerebrolysin

Cerebrolysin is a classic neuroprotective peptide with long history of use in Eastern Europe.

CJC-1295

CJC-1295 (Modified GRF 1-29)

CJC-1295 is a modified GHRH analog with DPP-IV resistance. The two forms (with/without DAC) give fundamentally different pharmacological profiles.

C165H269N47O46

CJC-1295 with DAC

CJC-1295 with Drug Affinity Complex (DAC) — albumin binding extends half-life from 30 min to 6-8 days. Weekly dosing.

Dihexa

Dihexa (PNB-0408)

Hexapeptide angiotensin IV analog with 7 orders of magnitude stronger synaptogenic effect than BDNF. Orally active, crosses blood-brain barrier.

DSIP

Delta Sleep-Inducing Peptide

9-amino-acid neuropeptide discovered in 1977. Studied for sleep disorders, stress resistance and chronic pain.

C35H48N10O15

FOXO4-DRI

FOXO4-DRI (senolytic peptide)

D-retro-inverso peptide developed at Erasmus MC (de Keizer, 2017). Selectively induces apoptosis in senescent cells by disrupting FOXO4-p53 interaction.

GHK-Cu

GHK-Cu — copper peptide (the blue elixir)

GHK-Cu is a natural tripeptide known as the "blue elixir" for its characteristic color. The body produces it itself — levels drop from 200 ng/mL at 20 to 80 ng/mL at 60. Modulates 31% of human genes, activates DNA repair and collagen synthesis, delivers copper to mitochondria.

C14H24N6O4Cu

GHRP-6

GHRP-6 is the first GHRP peptide, discovered in the 80s, thanks to which ghrelin itself was identified. Studied for appetite regulation and tissue protection.

C46H56N12O6

Gonadorelin

Gonadorelin (synthetic GnRH)

Synthetic identical to natural GnRH. Decapeptide used for hypothalamic-pituitary function testing and HPG axis restoration.

C55H75N17O13

Hexarelin

Hexarelin is one of the most potent GHRP peptides with additional researched cardioprotective effects via CD36 receptors.

C47H58N12O6

Humanin

Humanin is a mitochondrial peptide whose levels decline with age.

C113H176N38O33

Ipamorelin

Ipamorelin is the most selective GHRP — without elevation of cortisol, prolactin or appetite. Ideal for clean GH protocols.

C38H49N9O5

Kisspeptin-10

10-amino-acid fragment of natural kisspeptin. Master regulator of puberty and fertility. Phase 2 for HSDD (Comninos, Imperial College).

KPV

KPV (Lysine-Proline-Valine)

KPV is an anti-inflammatory tripeptide from α-MSH, studied for gut and skin inflammatory conditions. Unique for its oral stability.

C16H30N4O4

Liraglutide

Liraglutide (GLP-1 analog)

The first modern GLP-1 analog approved for chronic obesity treatment (Saxenda) and type 2 diabetes (Victoza). ~13-hour half-life, daily s.c. administration.

C172H265N43O51

LL-37

Cathelicidin LL-37

37-amino-acid human antimicrobial peptide. Active against bacteria, biofilms and enveloped viruses. Immunomodulator from cathelicidin family.

C205H340N60O53

Matrixyl

Matrixyl (Pal-KTTKS)

Palmitoylated pentapeptide fragment of procollagen I. Stimulates collagen synthesis in dermal fibroblasts. Sederma development.

C39H75N7O8

Mazdutide

Mazdutide (GLP-1/glucagon dual)

Chinese GLP-1/glucagon dual agonist from Innovent Biologics, licensed from Eli Lilly. Approved in China (June 2025) for body weight management.

MGF

MGF (Mechano Growth Factor)

MGF is a peptide for muscle growth and recovery. Activates satellite cells responsible for muscle regeneration.

C121H200N42O39

MOTS-c

MOTS-c (mitochondrial-derived peptide)

16-amino-acid peptide encoded by mitochondrial DNA. First identified mitochondrial-derived peptide (Lee et al, 2015). Exercise mimetic.

NA-Semax

N-Acetyl Semax Amidate

Stabilized Semax with N-acetylation and C-amidation. 3-4× longer half-life, better nasal bioavailability.

NAD+

NAD+ (Nicotinamide Adenine Dinucleotide)

NAD+ is one of the most researched peptides for longevity and cellular aging.

C21H28N7O14P2

Orforglipron

Orforglipron (oral non-peptide GLP-1)

Oral non-peptide GLP-1 agonist from Eli Lilly — small molecule with 24-hour half-life. Phase 3 ATTAIN-1 (2026) showed −12.4% body weight without dietary restrictions.

Oxytocin

Oxytocin is the peptide of social connection. Studied for empathy, trust and emotional regulation.

C43H66N12O12S2

P21

P21 (CNTF-derived neurogenic peptide)

4-amino-acid peptide derived from Ciliary Neurotrophic Factor. Stimulates hippocampal neurogenesis; developed at Mount Sinai for Alzheimer.

Pinealon

Pinealon (synthetic pineal tripeptide)

Synthetic tripeptide (Glu-Asp-Arg) from Khavinson group. Studied for circadian rhythm normalization and neuroprotection in age-related cognitive decline.

C15H26N6O8

PT-141

PT-141 (Bremelanotide)

PT-141 (Vyleesi) is the FDA-approved melanocortin agonist for hypoactive sexual desire disorder. Acts centrally via MC4R.

C50H68N14O10

PTD-DBM

PTD-DBM (Wnt activator for hair)

Cell-penetrating peptide inhibiting CXXC5-Dishevelled binding. Activates Wnt/β-catenin signaling in hair follicles. Yonsei University development.

Retatrutide

Retatrutide is the most sought-after new weight-loss peptide in 2026. Triple agonist (GLP-1/GIP/glucagon) with ~24% weight loss over 48 weeks in Eli Lilly SURMOUNT trials.

C226H350N48O68

Selank

Selank is a Russian nootropic peptide (tuftsin analog), registered as anxiolytic. No dependence or sedation.

C33H57N11O9

Semaglutide

Semaglutide is a long-acting GLP-1 agonist (Ozempic, Wegovy) from Novo Nordisk. In STEP trials — average 14.9% weight loss over 68 weeks.

C187H291N45O59

Semax

Semax is a Russian nootropic — modified ACTH 4-7 fragment. Registered for ischemic stroke. Elevates BDNF in hippocampus.

C39H54N10O10S

Sermorelin

Sermorelin (GRF 1-29) is a classic GHRH analog developed by Nobel laureate Roger Guillemin. Stimulates natural pulsatile GH release.

C149H246N44O42S

SS-31

Elamipretide (SS-31)

Mitochondria-targeted tetrapeptide from Stealth BioTherapeutics. Phase 3 SUBPOSE-2 for Friedreich ataxia and Phase 3 SAGE for primary mitochondrial myopathy.

C32H49N9O5

Survodutide

Survodutide (GLP-1/glucagon dual)

Dual GLP-1/glucagon agonist by Boehringer Ingelheim. Phase 3 SYNCHRONIZE-1 (2025) showed −19% body weight over 76 weeks and MASH regression in 83% of cases.

TB-500

Thymosin Beta-4 fragment

TB-500 is the active fragment of Thymosin Beta-4, researched for muscle and cardiac tissue regeneration.

C17H27N5O4

Tesamorelin

Tesamorelin is the FDA-approved GHRH analog (Egrifta), known for its unique selectivity toward visceral adipose tissue. Clinical trials document 15-18% reduction of internal-organ fat without affecting subcutaneous tissue.

C221H366N72O67S

Thymalin

Thymalin (thymic polypeptide complex)

Thymic polypeptide complex developed by Vladimir Khavinson in St. Petersburg. 40+ years of Russian clinical data for immunosenescence.

Thymosin Alpha 1

Thymosin Alpha 1 (Tα1)

28-amino-acid thymic peptide. Approved as drug (Zadaxin) in 35 countries for hepatitis B/C and as immunotherapy adjuvant. Restores T-cell response.

C129H215N33O55

Tirzepatide

Tirzepatide (Mounjaro, Zepbound) is the first dual GLP-1/GIP agonist. In SURMOUNT-1 — 22.5% weight loss over 72 weeks, superior to Semaglutide.

C225H348N48O68

VIP

Vasoactive Intestinal Peptide

28-amino-acid neuropeptide with anti-inflammatory action. Studied in CIRS (chronic inflammatory syndromes) and mast cell activation.

C147H237N43O43S

What is the Peptide Encyclopedia?

Our peptide encyclopedia is a free scientific reference for researchers. Here you will find detailed information about each peptide — mechanism of action, molecular formula, published studies, and available products. Information is presented in accessible language with links to original scientific publications in PubMed.

All products are sold strictly for in-vitro research purposes. Not approved for human consumption.