Browse a curated reference of 49+ research peptides. Each entry captures mechanism, sequence, structure, and the research areas it’s studied for — with manufacturing and quality context from the synthesis guide.
aka Ozempic, Wegovy, Rybelsus
Long-acting GLP-1 receptor agonist for glycemic control and weight management.
aka Mounjaro, Zepbound
Dual GIP / GLP-1 receptor agonist with industry-leading weight-loss endpoints.
aka LY3437943
Investigational triple agonist (GIP / GLP-1 / glucagon) in late-stage trials.
Long-acting amylin analog studied alongside semaglutide as CagriSema.
aka Recombinant human insulin, rhInsulin, regular insulin, Humulin, Novolin
The archetypal protein biologic — a 51-amino-acid two-chain hormone, disulfide-linked, and the first recombinant DNA drug ever marketed.
aka GlucaGen, Baqsimi, Gvoke
Insulin’s counter-hormone — a 29-amino-acid peptide that raises blood glucose, the emergency rescue for severe lows, and the "G" in the new triple agonists.
aka Body Protective Compound 157, PL 14736
Synthetic gastric pentadecapeptide investigated for tendon, ligament, and GI repair.
aka Thymosin Beta-4 fragment
Synthetic fragment of thymosin β4 studied for cell migration and tissue repair.
aka Copper Peptide, Tripeptide-1 Copper, Copper Tripeptide-1
Endogenous copper-binding tripeptide widely studied in skin and hair biology.
aka Copper Tripeptide AHK, Ala-His-Lys Copper
Copper-binding tripeptide (Ala-His-Lys) studied for hair-follicle stimulation and dermal repair.
aka Palmitoyl Pentapeptide-4, Pal-KTTKS, Matrixyl
Palmitoylated matrikine peptide that signals fibroblasts to synthesize collagen — contains no copper.
aka Erythropoietin, Epoetin alfa, Epogen, Procrit, recombinant human erythropoietin, rhEPO
A glycoprotein hormone that drives red-blood-cell production — a recombinant biologic famous in medicine for treating anemia and infamous in sport for blood doping.
aka PTH(1-34), Forteo, Bonsity, recombinant parathyroid hormone
The active fragment of parathyroid hormone — a recombinant peptide that builds bone, exploiting a paradox: the same hormone resorbs bone when continuous, but builds it when pulsed.
aka Recombinant human growth hormone, rhGH, 191aa HGH, Human growth hormone, Genotropin, Humatrope, Norditropin, Nutropin, Saizen, Omnitrope, Serostim
Recombinant 191-amino-acid human growth hormone — a folded protein biologic identical in sequence to pituitary GH, not a synthetic research peptide.
aka Insulin-like growth factor 1, Mecasermin, Increlex, Somatomedin C, rhIGF-1
The downstream effector of growth hormone — a 70-amino-acid recombinant protein, structurally a cousin of proinsulin, that carries out most of GH’s growth signal.
aka Long R3 IGF-1, LR3 IGF-1
A long-acting modified IGF-1 analog with reduced IGFBP binding and prolonged systemic activity.
aka Mechano Growth Factor, IGF-1Ec, IGF-1 Ec
A splice variant of IGF-1 expressed after muscle damage; studied for satellite-cell activation.
aka Modified GRF (1-29), Mod GRF 1-29
Modified GHRH(1-29) analog with short plasma half-life.
aka CJC-1295 DAC
Long-acting GHRH analog with a Drug Affinity Complex for albumin binding.
Selective ghrelin receptor agonist (GHRP) with minimal cortisol / prolactin release.
aka Egrifta
GHRH analog FDA-approved for HIV-associated lipodystrophy.
aka GRF 1-29, Geref
Truncated GHRH(1-29) — historically the first GHRH analog approved by the FDA.
aka GDF-8, Growth differentiation factor 8, MSTN
The body’s brake on muscle growth — a TGF-β-family growth factor whose inhibition is the leading strategy to preserve muscle, including during GLP-1 weight loss.
aka FST, FS-288, FS-315, follistatin-344
A natural myostatin and activin antagonist — by neutralizing the muscle brake it is one of the most potent pro-muscle factors studied, and a doping and gene-therapy flashpoint.
aka SRK-015, SRK-439
A monoclonal antibody that selectively blocks pro/latent myostatin — the muscle brake — studied to preserve lean mass during GLP-1 weight loss.
aka REGN1033
An anti-myostatin antibody (Regeneron) now studied in obesity combinations to cut lean-mass loss and deepen fat loss alongside semaglutide.
aka GYM-329, RG6237, RG-70240
A "sweeping" anti-myostatin antibody (Roche/Chugai) that not only blocks but actively clears myostatin — a cautionary case after its rare-disease trials failed.
aka REGN2477
An anti-activin-A antibody (Regeneron) — closest to approval of the axis (FOP), and a partner in obesity muscle-preservation combinations.
aka BYM338
An antibody that blocks the activin type II receptor itself — shutting off myostatin AND activin signaling at once; famous for adding muscle while cutting fat.
Mitochondrially-encoded peptide with reported insulin-sensitizing activity.
aka Elamipretide, Bendavia
Mitochondria-targeted cardiolipin-binding tetrapeptide.
aka Epithalon, Epithalamin fragment
Synthetic tetrapeptide investigated for telomerase activity and circadian effects.
Russian synthetic ACTH(4-10) analog studied for nootropic and neuroprotective effects.
aka Delta Sleep-Inducing Peptide
Endogenous nonapeptide first isolated for its sleep-promoting properties.
aka MT-2, MT-II
Synthetic cyclic analog of α-MSH; non-selective melanocortin receptor agonist.
aka Melanotan I, Melanotan-1, MT-I, MT-1, CUV1647, Scenesse
MC1R-selective α-MSH analog; FDA-approved (Scenesse) for photoprotection in erythropoietic protoporphyria.
aka Bremelanotide, Vyleesi
Melanocortin-4 receptor agonist FDA-approved for HSDD in premenopausal women.
C-terminal decapeptide fragment of kisspeptin; potent GnRH secretagogue.
aka Human chorionic gonadotropin, Choriogonadotropin alfa, Ovidrel, Pregnyl, Novarel
A heterodimeric glycoprotein hormone — two different glycosylated subunits — that mimics the LH surge; the pregnancy hormone, also the subject of a debunked diet.
aka Pitocin, Syntocinon, the love hormone
A 9-amino-acid cyclic hormone of labor and bonding — historically the first peptide hormone ever chemically synthesized, and the most over-marketed "love hormone."
aka Follicle-stimulating hormone, Follitropin alfa, Gonal-f, Follistim, Puregon
A heterodimeric glycoprotein gonadotropin that drives follicle growth and spermatogenesis — the workhorse of IVF stimulation, and a sister molecule to HCG and LH.
aka Tα1, Thymalfasin, Zadaxin
Thymus-derived 28-amino-acid peptide approved in many countries as an immunomodulator.
aka Cathelicidin, hCAP-18 fragment
Human cathelicidin antimicrobial peptide active across bacteria, fungi, and viruses.
C-terminal hGH fragment (177–191) historically investigated for lipolysis.
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