Peptide profiles built for real search demand
Educational pages for the compounds people actually search — from BPC-157 and TB-500 to GLP-1, insulin, and classic neuropeptides.
Each profile covers chemistry, research context, and nomenclature. This is not medical advice and not a shopping page — when you want product specifications, use the catalog CTA on each profile.
BPC-157
15 aaBPC-157 (Body Protection Compound-157) is a synthetic 15-amino-acid peptide studied in preclinical models of tissue repair and gastrointesti…
TB-500
7 aaTB-500 refers to a synthetic peptide fragment associated with thymosin beta-4 research, studied for effects on cell migration and tissue rem…
Tirzepatide
39 aaTirzepatide is an engineered dual glucose-dependent insulinotropic polypeptide (GIP) and GLP-1 receptor agonist peptide. It is an approved p…
Retatrutide
39 aaRetatrutide is an investigational triple agonist peptide targeting GLP-1, GIP, and glucagon receptors. It is widely discussed in metabolic r…
GLP-1
31 aaGLP-1 (glucagon-like peptide-1) is an incretin hormone that stimulates insulin secretion and influences appetite. Engineered analogs dominat…
Semaglutide
31 aaSemaglutide is a modified GLP-1 receptor agonist peptide designed for extended half-life. It is an approved prescription medicine in many ju…
CJC-1295
30 aaCJC-1295 is a synthetic analog of growth hormone-releasing hormone (GHRH) studied for effects on the GH/IGF-1 axis. Variants with and withou…
Ipamorelin
5 aaIpamorelin is a selective growth hormone secretagogue receptor agonist peptide studied for GH release with a relatively focused receptor pro…
Sermorelin
29 aaSermorelin is a synthetic 29-amino-acid analog of growth hormone–releasing hormone (GHRH 1-29). It is widely searched in GH-axis education a…
AOD-9604
16 aaAOD-9604 is a synthetic peptide related to the C-terminal region of human growth hormone, studied in metabolic and lipolysis-related researc…
Epithalon
4 aaEpithalon (epitalon) is a synthetic tetrapeptide (AEDG) associated with pineal and aging research literature. It is a high-intent educationa…
MK-677
MK-677 (ibutamoren) is an orally active ghrelin receptor agonist often searched alongside peptide GH secretagogues. It is a small molecule, …
Melanotan II
7 aaMelanotan II is a synthetic cyclic peptide that acts on melanocortin receptors. It has been researched in pigmentation and related pathways …
GHRP-2
6 aaGHRP-2 (pralmorelin) is a synthetic growth hormone–releasing peptide that acts at the ghrelin receptor. It is a foundational compound in GH …
GHRP-6
6 aaGHRP-6 is a synthetic hexapeptide growth hormone secretagogue acting at the ghrelin receptor, frequently discussed for GH release and appeti…
LL-37
37 aaLL-37 is the active 37-residue peptide from human cathelicidin, a cornerstone molecule in antimicrobial peptide and innate immunity research…
Thymosin Alpha-1
28 aaThymosin alpha-1 is a 28-amino-acid immune-modulating peptide used or approved in some countries and widely studied in immunology research w…
KPV
3 aaKPV is the tripeptide Lys-Pro-Val, a C-terminal fragment related to alpha-melanocyte-stimulating hormone, studied in inflammation and barrie…
IGF-1 LR3
83 aaIGF-1 LR3 is a long-acting analog of insulin-like growth factor-1 used in cell culture and experimental research. It is a potent growth fact…
Cagrilintide
37 aaCagrilintide is a long-acting amylin analog peptide investigated for metabolic disease, often discussed alongside GLP-1 and dual/triple agon…
Insulin
51 aaInsulin is a 51-amino-acid peptide hormone that regulates blood glucose. It is the foundational peptide therapeutic and a reference point fo…
PT-141
7 aaPT-141 is a melanocortin receptor agonist peptide related to the bremelanotide research lineage. Understanding naming and approval status is…
GHK-Cu
3 aaGHK-Cu is a copper complex of the tripeptide glycyl-L-histidyl-L-lysine, extensively discussed in skin biology and cosmetic science literatu…
MOTS-c
16 aaMOTS-c is a 16-amino-acid mitochondrial-derived peptide studied in metabolic stress and exercise-related experimental models.
Hexarelin
6 aaHexarelin (examorelin) is a synthetic hexapeptide growth hormone secretagogue studied for potent GH-releasing activity and related receptor …
Tesamorelin
44 aaTesamorelin is a synthetic growth hormone–releasing hormone analog approved in some countries for specific labeled indications. It is an imp…
Kisspeptin-10
10 aaKisspeptin-10 is a decapeptide fragment that activates the kisspeptin receptor (KISS1R), a central node in reproductive hormone regulation r…
PEG-MGF
24 aaPEG-MGF refers to PEGylated mechano growth factor–related peptides discussed in muscle and recovery research communities. It is a research c…
SS-31
4 aaSS-31 (elamipretide) is a mitochondria-targeting tetrapeptide studied for effects on mitochondrial membranes and bioenergetics in experiment…
Gonadorelin
10 aaGonadorelin is a synthetic decapeptide identical to gonadotropin-releasing hormone (GnRH). Acting on the pituitary, it stimulates release of…
Oxytocin
9 aaOxytocin is a nine-amino-acid neuropeptide and hormone involved in labor, lactation, and social behavior. It is a classic model of cyclic pe…
Selank
7 aaSelank is a synthetic analog of the immunomodulatory peptide tuftsin, studied in models related to anxiety and cognitive function. Regulator…
Semax
7 aaSemax is a synthetic peptide analog of ACTH(4-10) studied for neurological and cognitive research applications. Status and availability diff…
Ghrelin
28 aaGhrelin is a 28-amino-acid hunger hormone requiring unique post-translational octanoylation for receptor activation — a key example of pepti…
Exendin-4
39 aaExendin-4 is a 39-residue peptide from Gila monster venom that activates the GLP-1 receptor and inspired the drug exenatide.
DSIP
9 aaDSIP (delta sleep-inducing peptide) is a nonapeptide historically investigated in sleep and stress research. Modern evidence and clinical us…
VIP
28 aaVasoactive intestinal peptide (VIP) is a 28-amino-acid neuropeptide involved in smooth muscle relaxation, immune modulation, and circadian b…
Survodutide
Survodutide (BI 456906) is an investigational dual GLP-1 and glucagon receptor agonist studied in metabolic and liver research. Unlike many …
Melanotan-1
13 aaMelanotan-1 (afamelanotide) is a synthetic tridecapeptide analog of α-melanocyte-stimulating hormone that acts on the melanocortin-1 recepto…
Liraglutide
31 aaLiraglutide is a modified glucagon-like peptide-1 (GLP-1) analog carrying a fatty-acid chain that extends its circulation time. It is a pres…
Glutathione
3 aaGlutathione (GSH) is a tripeptide of glutamate, cysteine and glycine and the most abundant small-molecule antioxidant inside human cells. It…
Mazdutide
Mazdutide (IBI362, LY3305677) is a dual GLP-1 and glucagon receptor agonist derived from oxyntomodulin. It has been studied in metabolic res…
Cerebrolysin
Cerebrolysin is an experimental mixture of low-molecular-weight peptides and amino acids produced by enzymatic breakdown of purified pig bra…
Dulaglutide
Dulaglutide is a GLP-1 receptor agonist in which two modified GLP-1 peptide chains are fused to a human immunoglobulin (IgG4) Fc fragment. T…
Teriparatide
34 aaTeriparatide is the first 34 amino acids of human parathyroid hormone (PTH), produced by recombinant technology and retaining the receptor-b…
Collagen peptides
Collagen peptides, also called hydrolyzed collagen or collagen hydrolysate, are a mixture of short peptides produced by breaking down animal…
Carnosine
2 aaCarnosine is a dipeptide of beta-alanine and histidine that is concentrated in skeletal muscle and brain tissue. Its imidazole side chain co…
Cyclosporin A
11 aaCyclosporin A is a cyclic non-ribosomal peptide immunosuppressant used in transplant medicine — a landmark natural product peptide drug.
Octreotide
8 aaOctreotide is an eight-amino-acid cyclic analog of somatostatin used clinically for hormone-secreting tumors and related indications.
Somatostatin
14 aaSomatostatin is a 14-residue inhibitory peptide hormone regulating growth hormone and multiple gut/pancreatic hormones.
SNAP-8
8 aaSNAP-8 (acetyl octapeptide-3) is a cosmetic peptide marketed in skincare science as a SNARE-complex–related topical ingredient. It is distin…
Follistatin-344
344 aaFollistatin-344 (FS-344) is the 344-amino-acid precursor isoform of follistatin, an activin-binding protein encoded by the FST gene. It anta…
Glucagon
29 aaGlucagon is a 29-amino-acid peptide hormone from pancreatic alpha cells that raises blood glucose, opposing insulin. It is the archetypal co…
GHRP-1
7 aaGHRP-1 is a synthetic growth hormone-releasing peptide developed from enkephalin-analog research and acting at the ghrelin/GHS receptor. It …
Leuprolide
10 aaLeuprolide (leuprorelin) is a synthetic decapeptide analog of gonadotropin-releasing hormone. Given continuously it desensitizes pituitary G…
Thymalin
Thymalin is a polypeptide complex extracted from thymus tissue and studied as an immunomodulatory 'thymic bioregulator.' Developed in the fo…
Setmelanotide
8 aaSetmelanotide is a synthetic cyclic octapeptide that selectively activates the melanocortin-4 receptor (MC4R), a signaling hub in the brain'…
Dihexa
Dihexa (PNB-0408) is a synthetic angiotensin IV-derived oligopeptide studied as a potentiator of hepatocyte growth factor (HGF) signaling at…
Thymosin beta-4
43 aaThymosin beta-4 is a naturally occurring 43-amino-acid peptide and the principal actin-sequestering molecule in many cell types. The researc…
Pramlintide
37 aaPramlintide is a synthetic analog of the pancreatic hormone amylin, designed with proline substitutions so it stays soluble rather than aggr…
Peptide YY
36 aaPeptide YY (PYY) is a 36-amino-acid gut hormone released from intestinal L-cells after eating, where it contributes to satiety and slows gas…
Neuropeptide Y
36 aaNeuropeptide Y (NPY) is a 36-amino-acid neuropeptide widely distributed in the nervous system. Research examines its roles in appetite, stre…
Argireline
6 aaArgireline (acetyl hexapeptide-8, formerly acetyl hexapeptide-3) is a synthetic acetylated hexapeptide widely used as a cosmetic ingredient.…
Goserelin
10 aaGoserelin is a synthetic decapeptide GnRH agonist that suppresses gonadal sex-hormone production through non-pulsatile receptor stimulation.…
Insulin-like growth factor 1
70 aaInsulin-like growth factor 1 (IGF-1), also called somatomedin C, is a 70-amino-acid peptide hormone structurally related to insulin. Produce…
Substance P
11 aaSubstance P is an 11-amino-acid neuropeptide of the tachykinin family involved in pain signaling and neurogenic inflammation research.
Defensin (HNP-1)
30 aaHuman neutrophil peptide-1 (HNP-1) is an alpha-defensin antimicrobial peptide with a disulfide-stabilized structure important in innate immu…
Vasopressin
9 aaVasopressin (antidiuretic hormone) is a nine-residue peptide closely related to oxytocin, central to water balance physiology.
Angiotensin II
8 aaAngiotensin II is an eight-amino-acid peptide central to blood-pressure regulation via the renin–angiotensin system.
Matrixyl
5 aaMatrixyl typically refers to palmitoyl pentapeptide-4 (Pal-KTTKS), a signal peptide widely used in cosmetic science and skincare formulation…
Humanin
24 aaHumanin is a mitochondrial-derived peptide encoded within the MT-RNR2 (16S rRNA) gene and was the first such peptide discovered. It is studi…
MGF
24 aaMGF (mechano growth factor) is a splice variant of insulin-like growth factor 1 (IGF-1) that shares the mature IGF-1 region but carries a di…
Amylin
37 aaAmylin, or islet amyloid polypeptide (IAPP), is a 37-residue peptide hormone co-secreted with insulin from pancreatic beta cells. It is stud…
GIP
42 aaGIP (glucose-dependent insulinotropic polypeptide) is a 42-amino-acid incretin hormone released from intestinal K-cells after meals, where i…
ARA-290
11 aaARA-290 (cibinetide) is an 11-amino-acid peptide corresponding to the helix-B surface of erythropoietin. It was engineered to engage the tis…
Lanreotide
8 aaLanreotide is a synthetic octapeptide analog of somatostatin that binds the same inhibitory receptors but resists degradation for far longer…
Teduglutide
33 aaTeduglutide is a synthetic 33-amino-acid analog of glucagon-like peptide-2 (GLP-2). A single alanine-to-glycine substitution extends its hal…
Cotadutide
30 aaCotadutide (MEDI0382) is a synthetic peptide engineered as a balanced dual agonist of the GLP-1 and glucagon receptors. It is an investigati…
Colistin
Colistin, also called polymyxin E, is a cyclic lipopeptide antibiotic from Paenibacillus species and a close relative of polymyxin B. It dis…
Daptomycin
13 aaDaptomycin is a 13-amino-acid cyclic lipopeptide antibiotic originally isolated from Streptomyces roseosporus. In the presence of calcium it…
Triptorelin
10 aaTriptorelin is a synthetic decapeptide analog of gonadotropin-releasing hormone (GnRH) and a long-acting agonist at the GnRH receptor. It is…
Adipotide
Adipotide (Prohibitin-TP01) is an experimental chimeric peptidomimetic that pairs a homing sequence targeting adipose-tissue blood vessels w…
Follistatin-315
315 aaFollistatin-315 (FS-315) is the longer of two follistatin isoforms generated by alternative splicing of the FST gene. Follistatin binds acti…
Oxyntomodulin
37 aaOxyntomodulin is a 37-amino-acid gut hormone released from intestinal L-cells after eating. Because it activates both the GLP-1 and glucagon…
Cholecystokinin
Cholecystokinin (CCK) is a peptide hormone and neurotransmitter released from intestinal I-cells and also produced widely in the brain. It t…
Orexin-A
33 aaOrexin-A (hypocretin-1) is a 33-amino-acid hypothalamic neuropeptide central to the regulation of wakefulness and arousal. Loss of orexin si…
Palmitoyl Tripeptide-1
3 aaPalmitoyl tripeptide-1 (Pal-GHK) is a lipidated cosmetic peptide made by attaching palmitic acid to the glycyl-histidyl-lysine (GHK) tripept…
Nafarelin
10 aaNafarelin is a synthetic decapeptide GnRH agonist administered intranasally. Continuous receptor activation desensitizes the pituitary and s…
Degarelix
10 aaDegarelix is a synthetic decapeptide GnRH receptor antagonist approved for advanced hormone-dependent prostate cancer. Unlike GnRH agonists,…
Linaclotide
14 aaLinaclotide is a synthetic 14-amino-acid peptide that activates guanylate cyclase-C on the intestinal lining, raising cyclic GMP and driving…
Abaloparatide
34 aaAbaloparatide is a synthetic 34-amino-acid analog sharing about 76% homology with parathyroid hormone-related protein (1-34). It selectively…
Desmopressin
9 aaDesmopressin (DDAVP) is a synthetic nonapeptide analog of vasopressin, modified by deamination of the first residue and a D-arginine substit…
Pemvidutide
Pemvidutide (ALT-801) is an investigational dual GLP-1/glucagon receptor agonist developed by Altimmune and studied in clinical trials for o…
Polymyxin B
Polymyxin B is a cyclic lipopeptide antibiotic from Paenibacillus polymyxa, produced as a mixture of closely related components. Its cationi…
Glucagon-like peptide-2
33 aaGlucagon-like peptide-2 (GLP-2) is a 33-amino-acid gut hormone produced from proglucagon in intestinal L cells and co-released with GLP-1. A…
ACE-031
ACE-031 is an engineered decoy receptor made by fusing the extracellular domain of the activin receptor type IIB (ActRIIB) to an IgG1 Fc fra…
Larazotide
8 aaLarazotide (larazotide acetate, AT-1001) is a synthetic eight-amino-acid peptide studied as a regulator of intestinal tight junctions, the s…
Lixisenatide
44 aaLixisenatide is a synthetic GLP-1 receptor agonist built on the exendin-4 scaffold rather than on human GLP-1. Marketed as Lyxumia and Adlyx…
Calcitonin
32 aaCalcitonin is a 32-amino-acid peptide hormone secreted by thyroid C-cells that helps regulate blood calcium. Salmon calcitonin has been used…
CGRP
37 aaCGRP (calcitonin gene-related peptide) is a 37-amino-acid neuropeptide produced by alternative splicing of the calcitonin gene. It is a pote…
ACTH
39 aaACTH (adrenocorticotropic hormone) is a 39-amino-acid pituitary hormone that drives adrenal cortisol release. As a key node of the HPA stres…
Decapeptide-12
10 aaDecapeptide-12 (Lumixyl) is a synthetic 10-amino-acid peptide with the sequence YRSRKYSSWY, designed to inhibit tyrosinase, the enzyme that …
SYN-AKE
2 aaSYN-AKE (dipeptide diaminobutyroyl benzylamide diacetate) is a synthetic cosmetic dipeptide designed to mimic waglerin-1, a peptide from the…
Pasireotide
6 aaPasireotide is a synthetic cyclohexapeptide somatostatin analog with roughly 40-fold greater affinity for somatostatin receptor 5 than earli…
Plecanatide
16 aaPlecanatide is a synthetic 16-amino-acid analog of the human peptide uroguanylin that activates intestinal guanylate cyclase-C. Increased cy…
Icatibant
10 aaIcatibant is a synthetic decapeptide peptidomimetic that selectively antagonizes the bradykinin B2 receptor. Because hereditary angioedema a…
Bradykinin
9 aaBradykinin is a nine-amino-acid signaling peptide of the kinin group, released from kininogen by kallikrein. Acting through B2 and B1 recept…
Insulin-like growth factor 2
67 aaInsulin-like growth factor 2 (IGF-2) is a ~67-amino-acid peptide of the insulin-like family that promotes cell growth, survival, migration a…
Efinopegdutide
Efinopegdutide (MK-6024) is an investigational dual GLP-1/glucagon receptor co-agonist studied by Merck, more recently focused on non-alcoho…
Bacitracin
Bacitracin is a mixture of related cyclic polypeptide antibiotics produced by Bacillus licheniformis. It inhibits dephosphorylation of C55-i…
Nisin
34 aaNisin is a 34-amino-acid lantibiotic produced by Lactococcus lactis, containing unusual post-translationally modified residues such as lanth…
Teixobactin
11 aaTeixobactin is an 11-residue nonribosomal depsipeptide antibiotic from the soil bacterium Eleftheria terrae, discovered in 2015 using the iC…
Met-enkephalin
5 aaMet-enkephalin (YGGFM) is an endogenous opioid pentapeptide foundational to pain and reward neurobiology research.
Atrial natriuretic peptide
28 aaAtrial natriuretic peptide (ANP) is a 28-residue cardiac hormone secreted by the atria in response to stretch. Encoded by NPPA, it signals t…
B-type natriuretic peptide
32 aaB-type natriuretic peptide (BNP) is a 32-residue hormone secreted by cardiac ventricles in response to wall stretch. Cleaved from proBNP alo…
Histrelin
9 aaHistrelin is a synthetic GnRH agonist peptide administered as a subcutaneous implant that releases drug continuously over about a year. It i…
Buserelin
9 aaBuserelin is a synthetic GnRH agonist peptide used to suppress sex-hormone production in hormone-dependent conditions. It is an approved pre…
Cetrorelix
10 aaCetrorelix is a synthetic decapeptide GnRH antagonist that competitively blocks the GnRH receptor. It is an approved prescription medicine u…
Ganirelix
10 aaGanirelix is a synthetic decapeptide GnRH antagonist that competitively blocks the pituitary GnRH receptor. It is an approved prescription m…
Beta-endorphin
31 aaBeta-endorphin is a 31-amino-acid endogenous opioid peptide cleaved from the proopiomelanocortin (POMC) precursor. It is a foundational mole…
Ziconotide
25 aaZiconotide is the synthetic form of an ω-conotoxin, a 25-amino-acid peptide from cone snail venom that selectively blocks N-type voltage-gat…
Terlipressin
12 aaTerlipressin is a synthetic analog of vasopressin built by adding three glycine residues to lysine-vasopressin. It acts as a slow-release pr…
Carbetocin
8 aaCarbetocin is a synthetic long-acting analog of oxytocin. Structural modifications extend its half-life to roughly 85-100 minutes versus a f…
Bivalirudin
20 aaBivalirudin is a synthetic 20-amino-acid peptide modeled on the leech anticoagulant hirudin. It binds thrombin bivalently, occupying both th…
Apelin
Apelin is an endogenous peptide hormone processed from a 77-amino-acid precursor into active fragments such as apelin-13 and apelin-36. It i…
Beinaglutide
30 aaBeinaglutide is a recombinant human GLP-1(7-36) that shares 100% sequence identity with native human GLP-1. Approved in China for type 2 dia…
Gramicidin
15 aaGramicidin is a 15-residue linear peptide antibiotic from the soil bacterium Brevibacillus brevis, notable for alternating L- and D-amino ac…
Teicoplanin
Teicoplanin is a glycopeptide antibiotic complex first isolated in 1978 from Actinoplanes teichomyceticus, sharing the mechanism of vancomyc…
Relaxin
Relaxin (H2 relaxin) is a peptide hormone of the insulin superfamily, built from A and B chains linked by disulfide bonds. Circulating relax…
Endothelin-1
21 aaEndothelin-1 (ET-1) is a 21-amino-acid peptide produced mainly by vascular endothelial cells and is the most potent endogenous vasoconstrict…
Secretin
27 aaSecretin is a 27-amino-acid hormone released from duodenal S-cells in response to stomach acid entering the small intestine. Discovered by B…
Gastrin
Gastrin is a peptide hormone released by G-cells of the gastric antrum that stimulates acid secretion from the stomach's parietal cells. Cir…
Efpeglenatide
Efpeglenatide is a long-acting GLP-1 receptor agonist built from an exendin-based peptide conjugated to an antibody Fc fragment for extended…
Galanin
30 aaGalanin is a neuropeptide (30 residues in humans) that modulates neurotransmission across many brain regions. Research explores its involvem…
Alpha-MSH
13 aaAlpha-MSH (alpha-melanocyte-stimulating hormone) is a 13-amino-acid melanocortin peptide processed from POMC. Research examines its roles in…
Magainin
23 aaMagainins are cationic antimicrobial peptides from the skin of the African clawed frog, with magainin 2 (GIGKFLHSAKKFGKAFVGEIMNS) the best-s…
Melittin
26 aaMelittin is the principal component of honeybee venom, a 26-residue amphipathic peptide that inserts into and permeabilizes lipid membranes.…
Atosiban
9 aaAtosiban is a synthetic nonapeptide, a desamino-oxytocin analog that competitively antagonizes oxytocin and vasopressin receptors. By blocki…
Eptifibatide
7 aaEptifibatide is a synthetic cyclic heptapeptide derived from a disintegrin in pygmy rattlesnake venom. It reversibly blocks the platelet gly…
Adropin
76 aaAdropin is a secreted peptide encoded by the energy homeostasis-associated gene (ENHO) and first described in 2008. Its 76-residue sequence …
Palmitoyl Tetrapeptide-7
4 aaPalmitoyl Tetrapeptide-7 (Pal-GQPR) is a lipidated cosmetic peptide based on a Gly-Gln-Pro-Arg fragment of immunoglobulin G, and a component…
Pexiganan
22 aaPexiganan (MSI-78) is a 22-amino-acid synthetic antimicrobial peptide derived from the frog-skin peptide magainin 2. It folds into an amphip…
Chlorotoxin
36 aaChlorotoxin is a 36-amino-acid peptide from deathstalker scorpion venom, stabilized by four disulfide bonds. It binds targets enriched on gl…
Apamin
18 aaApamin is an 18-amino-acid neurotoxic peptide from honeybee venom, cross-linked by two disulfide bonds into a compact fold. It is the classi…
Motilin
22 aaMotilin is a 22-amino-acid gut hormone secreted by endocrine cells of the small intestine. It coordinates the migrating motor complex, the w…
Obestatin
23 aaObestatin is a 23-amino-acid peptide cleaved from the same preproghrelin precursor that produces ghrelin. It was originally proposed to oppo…
Albiglutide
Albiglutide is a GLP-1 receptor agonist created by genetically fusing two modified GLP-1 sequences to human serum albumin, giving it a long …
Neurotensin
13 aaNeurotensin is a 13-amino-acid neuropeptide found in the brain and gut. Research examines its interactions with dopamine signaling and its r…
Dynorphin
17 aaDynorphin is a family of endogenous opioid peptides (dynorphin A is 17 residues) derived from prodynorphin. It preferentially activates kapp…
Alexamorelin
7 aaAlexamorelin (Ala-His-D-2-methyl-Trp-Ala-Trp-D-Phe-Lys-NH2) is a synthetic growth hormone secretagogue studied in human endocrine research. …
Protegrin-1
18 aaProtegrin-1 (PG-1) is an 18-residue arginine-rich antimicrobial peptide from porcine leukocytes. Two disulfide bonds lock it into an antipar…
Indolicidin
13 aaIndolicidin is a 13-residue cathelicidin antimicrobial peptide from bovine neutrophils, unusually rich in tryptophan and proline. It is one …
Thymopentin
5 aaThymopentin (TP-5, sequence RKDVY) is a synthetic pentapeptide corresponding to residues 32-36 of the thymic hormone thymopoietin. It intera…
Elabela
Elabela (also called Apela or Toddler) is a micropeptide hormone identified in 2013 as a second endogenous ligand of the apelin APJ receptor…
Spexin
14 aaSpexin (neuropeptide Q) is a 14-amino-acid endogenous peptide discovered by bioinformatic analysis in 2007. It signals through galanin recep…
C-type natriuretic peptide
22 aaC-type natriuretic peptide (CNP) is a 22-residue peptide of the natriuretic family that acts locally rather than as a circulating natriureti…
Adrenomedullin
52 aaAdrenomedullin (ADM) is a 52-amino-acid peptide hormone first isolated from adrenal-medulla tumor tissue in 1993. Widely expressed and circu…
Endomorphin-1
4 aaEndomorphin-1 (Tyr-Pro-Trp-Phe-NH2) is an endogenous opioid tetrapeptide and one of the most selective natural agonists of the mu-opioid rec…
Endomorphin-2
4 aaEndomorphin-2 (Tyr-Pro-Phe-Phe-NH2) is an endogenous opioid tetrapeptide and a highly selective mu-opioid receptor agonist. It differs from …
Dermorphin
7 aaDermorphin is a naturally occurring opioid heptapeptide from the skin of Phyllomedusa frogs and a highly potent, selective mu-opioid recepto…
Deltorphin
7 aaDeltorphin (deltorphin A / dermenkephalin) is a naturally occurring opioid heptapeptide from Phyllomedusa frog skin and a potent, highly sel…
Neuromedin U
25 aaNeuromedin U (NmU) is a neuropeptide found in brain and gut, first isolated in 1985 for its uterus-contracting activity. Acting through the …
Acetyl Tetrapeptide-5
4 aaAcetyl Tetrapeptide-5 (trade name Eyeseryl) is a synthetic acetylated tetrapeptide used as a cosmetic ingredient in eye-care products, marke…
Omiganan
12 aaOmiganan is a synthetic 12-amino-acid cationic peptide analog of indolicidin, a host-defense peptide from bovine neutrophils. It depolarizes…
Deslorelin
9 aaDeslorelin is a synthetic GnRH agonist peptide used primarily in veterinary medicine. As implants such as Suprelorin and Ovuplant, it is app…
Abarelix
10 aaAbarelix is a synthetic decapeptide GnRH antagonist developed for advanced prostate cancer. It was introduced in the United States in 2003 b…
Vapreotide
8 aaVapreotide is a synthetic cyclic octapeptide analog of somatostatin that activates somatostatin receptors. It has been studied and used in s…
Aviptadil
28 aaAviptadil is an injectable synthetic form of human vasoactive intestinal peptide (VIP), a 28-amino-acid neuropeptide. It has been investigat…
Macimorelin
Macimorelin is an orally active ghrelin/growth hormone secretagogue receptor agonist. It was approved by the FDA in 2017 as a diagnostic age…
Nesfatin-1
82 aaNesfatin-1 is a peptide cleaved from the precursor protein nucleobindin-2 (NUCB2), produced in the hypothalamus and in peripheral tissues. I…
Bombesin
14 aaBombesin is a 14-amino-acid peptide first isolated from amphibian skin that gave its name to a family of mammalian receptors. It is widely u…
Nociceptin
17 aaNociceptin (orphanin FQ) is a 17-amino-acid neuropeptide that binds the NOP receptor, a member of the opioid receptor family. It is studied …
P21
4 aaP21 (P021) is a synthetic peptide designed as a mimetic of an active region of ciliary neurotrophic factor (CNTF). It has been studied in an…
Temporin
Temporins are a large family of short antimicrobial peptides first isolated from the European frog Rana temporaria. Members such as temporin…
Cecropin
Cecropins are antimicrobial peptides first isolated from the hemolymph of the cecropia moth. Roughly 31-37 residues long, they form amphipat…
Thymulin
9 aaThymulin is a nonapeptide thymic hormone produced by thymic epithelial cells that requires a zinc ion for its biological activity and charac…
Urocortin
40 aaUrocortin is a 40-amino-acid neuropeptide of the corticotropin-releasing factor (CRF) family. Binding both CRHR1 and CRHR2 receptors, it par…
Urotensin-II
11 aaUrotensin-II (U-II) is an 11-amino-acid cyclic peptide encoded by UTS2 and described as one of the most potent vasoconstrictors known. Actin…
Thymogen
2 aaThymogen is a synthetic dipeptide, L-glutamyl-L-tryptophan (Glu-Trp), from the Khavinson family of short-peptide bioregulators. Identified a…
Leuphasyl
5 aaLeuphasyl (INCI: Pentapeptide-18) is a synthetic cosmetic peptide modeled on natural enkephalins, marketed to reduce the appearance of expre…
Oligopeptide-1 (EGF)
53 aaOligopeptide-1, INCI name sh-Oligopeptide-1, is a bioengineered analog of human epidermal growth factor (EGF), a 53-residue protein used as …
Murepavadin
Murepavadin (POL7080) is a synthetic cyclic beta-hairpin peptidomimetic derived from the host-defense peptide protegrin I. Unlike broad memb…
Huwentoxin
Huwentoxins are a family of neurotoxic peptides from the venom of the Chinese bird spider, most sharing the highly stable inhibitor cystine-…
Mambalgin
Mambalgins are three-finger-toxin peptides isolated from black mamba venom that inhibit acid-sensing ion channels (ASICs) by trapping them i…
Cortagen
4 aaCortagen (Ala-Glu-Asp-Pro, AEDP) is a synthetic tetrapeptide from the Khavinson family of bioregulators, designed as the defined-sequence co…
Cardiogen
4 aaCardiogen (Ala-Glu-Asp-Arg, AEDR) is a synthetic tetrapeptide from the Khavinson family of bioregulators, studied as a heart-tissue peptide …
Plectasin
40 aaPlectasin is a 40-amino-acid antimicrobial peptide from the saprophytic fungus Pseudoplectania nigrella, and the first defensin discovered i…
Guanylin
15 aaGuanylin is a 15-amino-acid peptide secreted by goblet cells of the colon and encoded by GUCA2A. As an endogenous agonist of the guanylate c…
Uroguanylin
16 aaUroguanylin is a 16-amino-acid peptide secreted by enterochromaffin cells of the duodenum and encoded by GUCA2B. As an endogenous guanylate …
Phoenixin
14 aaPhoenixin (PNX) is a highly conserved neuropeptide first described in 2013 and processed from the SMIM20 prohormone into 14- and 20-residue …
Catestatin
21 aaCatestatin is a 21-amino-acid peptide cleaved from chromogranin A and released from neuroendocrine secretory granules. As a non-competitive …
PE-22-28
7 aaPE-22-28 is a synthetic heptapeptide derived from spadin, developed as a shortened analog that inhibits the TREK-1 potassium channel. It has…
Cortexin
Cortexin is a low-molecular-weight polypeptide complex extracted from cerebral cortex tissue, studied largely in Russian neuroscience litera…
Pinealon
3 aaPinealon is a synthetic tripeptide (Glu-Asp-Arg, EDR) from the Khavinson short-peptide bioregulator class. It has been studied for proposed …
Teverelix
10 aaTeverelix is a synthetic decapeptide GnRH antagonist that binds competitively and reversibly to pituitary GnRH receptors, suppressing lutein…
Seglitide
6 aaSeglitide (MK-678) is a synthetic cyclic hexapeptide analog of somatostatin with strong activity at the SSTR2 receptor subtype. It has been …
Capromorelin
Capromorelin is an orally active ghrelin/growth hormone secretagogue receptor agonist that increases appetite and stimulates growth hormone …
Anamorelin
Anamorelin is an orally active, centrally penetrant agonist of the ghrelin/growth hormone secretagogue receptor with appetite-stimulating an…
Relamorelin
Relamorelin is a synthetic, centrally penetrant agonist of the ghrelin/growth hormone secretagogue receptor developed as a prokinetic. It ha…
Tabimorelin
Tabimorelin (NN703) is a potent, orally active agonist of the ghrelin/growth hormone secretagogue receptor and one of the earliest GH secret…

