Cornerstone reference
A free, single-page reference to the research peptides most commonly studied in the published peer-reviewed literature. Each entry summarises sequence, class, mechanism, half-life, stability and a primary citation, plus a link to the full reference page if we stock the compound. Last updated 29 April 2026 by Joe, founder.
Research use only. The compounds described on this page are supplied for in-vitro laboratory research. None of the content here is medical advice, dosing guidance or a recommendation for human use.
9 entries
FTPP; CKGGRAKDC-GG-D(KLAKLAK)2
A peptidomimetic chimera that targets prohibitin on the surface of white adipose vasculature, characterised in published preclinical literature for adipose-specific apoptotic research models. Distinctive for its tissue-targeting domain rather than a receptor-agonist mechanism.
Cibinetide; ARA-290; Helix B Surface Peptide
An 11-amino-acid synthetic peptide derived from the helix B surface of erythropoietin (EPO) and engineered to bind the heteromeric tissue-protective receptor (EPOR/CD131) without the haematopoietic activity of EPO itself. Characterised in inflammation and tissue-repair literature.
AT-II
An octapeptide hormone of the renin-angiotensin system (RAS), one of the most extensively cited reference peptides in cardiovascular and renal pharmacology. Listed here as a reference; stocked separately as a research-grade reference standard from specialist suppliers.
2 entries
Body Protection Compound-157; Pentadecapeptide BPC-157
A 15-amino-acid synthetic peptide derived from a partial sequence of human gastric juice protein. One of the most widely cited regenerative-research peptides, characterised in extensive preclinical literature for tendon, gut-mucosal and connective-tissue repair models.
Vitamin B12; Mecobalamin
The methylated, biologically active form of vitamin B12 used as a research reference standard in metabolic, neurological and haematology pharmacology. Not a peptide chemically (it is a corrin-cobalt complex) but supplied as a research-grade reagent alongside the peptide catalogue.
3 entries
AM833
A long-acting amylin analogue characterised in published metabolic-research literature, frequently studied in combination with semaglutide as a dual-mechanism research compound. Acts at amylin and calcitonin receptor family targets.
Modified GRF 1-29; ModGRF
The same modified GHRH backbone as CJC-1295 (DAC) but lacking the albumin-binding maleimide. Half-life is approximately 30 minutes, longer than native GHRH(1-29) but much shorter than the DAC-modified version. Widely cited in pulsatile GH-research.
2 entries
Delta Sleep-Inducing Peptide
A 9-amino-acid neuropeptide originally isolated from rabbit cerebral venous blood and characterised in CNS / sleep-architecture research literature. The mechanism in published research is not fully resolved; multiple receptor-system interactions are reported.
2 entries
Epitalon; AEDG tetrapeptide
A short 4-amino-acid synthetic peptide originating from research at the St Petersburg Institute of Bioregulation and Gerontology. Characterised in published Russian literature for telomerase / pineal-gland research models.
Exendin-4
A 39-amino-acid peptide originally isolated from the salivary secretions of the Gila monster (Heloderma suspectum) and acting as a GLP-1 receptor agonist with greater enzymatic stability than native GLP-1. One of the most extensively cited GLP-1 reference compounds in incretin literature.
2 entries
FOXO4 D-Retro-Inverso peptide
A D-amino-acid retro-inverso peptide engineered to disrupt the FOXO4-p53 interaction, characterised in published senescence-research literature for selective senolytic activity in preclinical models.
FST-315; FST-344
An autocrine glycoprotein characterised in published myostatin / activin signalling literature as an antagonist of activin and myostatin via direct binding. Both 315-residue and 344-residue isoforms are studied.
5 entries
Copper Tripeptide-1; Glycyl-L-histidyl-L-lysine:copper
A tripeptide-copper complex consisting of glycyl-L-histidyl-L-lysine bound to a Cu²⁺ ion. One of the most extensively cited regenerative-research peptides, with hundreds of publications spanning copper biochemistry, collagen synthesis, and dermal-research models.
GSH; reduced glutathione; gamma-Glu-Cys-Gly
A 3-amino-acid intracellular tripeptide (gamma-Glu-Cys-Gly) and the principal endogenous low-molecular-weight thiol antioxidant in mammalian cells. Widely used as a reference standard in redox-biology research.
GnRH; LHRH; Gonadotropin-Releasing Hormone
A 10-amino-acid hypothalamic decapeptide and the natural ligand for the GnRH receptor on pituitary gonadotrophs. The canonical reference standard for HPG-axis pharmacology research.
3 entries
Human Chorionic Gonadotropin
A heterodimeric glycoprotein hormone with an alpha subunit shared with LH/FSH/TSH and a beta subunit specific to HCG. The canonical reference standard for LH receptor pharmacology research.
Human Growth Hormone; Somatotropin; Recombinant hGH 1-191
A 191-amino-acid recombinant human growth hormone identical in sequence to the endogenous pituitary peptide. The canonical reference standard for GH receptor / JAK2-STAT5 signalling research.
Examorelin
A 6-amino-acid synthetic GH secretagogue closely related to GHRP-6, characterised in published GH-axis literature. Reported in research as having additional CD36-mediated cardiovascular activity beyond GHS-R1a binding.
2 entries
Long R3 IGF-1; Long Arg3 Insulin-like Growth Factor-1
A 83-amino-acid analogue of IGF-1 with an additional 13-residue N-terminal extension and an arginine substitution at position 3. Reduced binding to IGF binding proteins gives an extended half-life relative to native IGF-1.
NNC 26-0161
A 5-amino-acid selective ghrelin-mimetic GH secretagogue. Distinct from GHRP-2 and GHRP-6 in that the published profile reports minimal cortisol or prolactin release, making it the most selective GHS-R1a compound for research purposes.
No common entries
No widely-cited research peptides start with J. The closest reference standards are Jasplakinolide (an actin-stabilising marine cyclic peptide used in cell biology) and Jingzhaotoxin (a spider toxin used in ion-channel research) - neither is supplied as a research-peptide reference.
2 entries
Metastin 45-54; Kp-10
The C-terminal 10-amino-acid fragment of the 54-residue Kisspeptin-54 / Metastin precursor and a high-affinity ligand at the GPR54 (KISS1R) receptor. The canonical reference compound for hypothalamic-pituitary-gonadal (HPG) axis research.
Kisspeptin / Lipid / Oxytocin / WAT-targeting research blend
A research-use blend formulation studied for parallel multi-pathway research models. Composition is supplied with the order; refer to the product page for the precise blend ratio of the current batch.
2 entries
Cathelicidin antimicrobial peptide; CAMP
A 37-amino-acid host-defence peptide processed from the human cathelicidin precursor hCAP-18. Characterised across innate-immunity literature for broad antimicrobial and immunomodulatory activity.
6 entries
Mitochondrial-derived peptide
A 16-amino-acid mitochondrial-derived peptide encoded within the 12S rRNA region of mitochondrial DNA. Characterised in metabolic-research literature for AMPK-mediated effects in skeletal muscle and adipose models.
Melanotan-1; NDP-MSH; [Nle&sup4;, D-Phe⁷]-α-MSH
A 13-amino-acid synthetic analogue of alpha-melanocyte-stimulating hormone with a norleucine-4 and D-phenylalanine-7 substitution that increases potency and metabolic stability at melanocortin receptors.
Melanotan-II; Ac-Nle-cyclo[Asp-His-D-Phe-Arg-Trp-Lys]-NH₂
A 7-amino-acid cyclic synthetic analogue of alpha-MSH with a lactam bridge between Asp² and Lys⁷. The cyclic structure provides metabolic stability and broad melanocortin receptor agonism.
Mechano Growth Factor; IGF-1Ec splice variant
A splice variant of the IGF-1 gene producing a 24-amino-acid C-terminal peptide called MGF, characterised in published muscle-research literature for its role in mechanical-load-induced satellite cell activation. PEG-MGF refers to the polyethylene-glycolated stabilised form.
1 entry
Nicotinamide adenine dinucleotide
A pyridine dinucleotide cofactor essential to redox metabolism, energy production and sirtuin / PARP signalling. Not a peptide chemically (it is a dinucleotide) but supplied as a research-grade reference standard alongside the peptide catalogue. Widely cited in mitochondrial and ageing-research literature.
1 entry
1 entry
Bremelanotide; PT141
A cyclic 7-amino-acid heptapeptide melanocortin agonist derived from MT-2 by replacing the C-terminal amide with a free carboxylic acid. Characterised in published literature for selectivity towards MC4R / MC3R relative to MC1R.
No common entries
No widely-cited research peptides start with Q.
1 entry
LY3437943
A 39-amino-acid synthetic peptide and triple agonist at the GLP-1, GIP and glucagon receptors. Characterised in published Phase 2 metabolic-research literature with the largest reported weight-related outcomes of any single-compound incretin programme to date.
4 entries
TP-7-tuftsin analogue
A 7-amino-acid synthetic peptide originating from research at the V.V. Zakusov Research Institute of Pharmacology. A heptapeptide analogue of the immunomodulatory tetrapeptide tuftsin, characterised in published literature for anxiolytic and GABAergic research.
Met-Glu-His-Phe-Pro-Gly-Pro; Russian nootropic peptide
A 7-amino-acid synthetic peptide derived from the ACTH(4-10) fragment with a C-terminal Pro-Gly-Pro tripeptide added for enzymatic stability. Characterised in published Russian neuroscience literature for BDNF / NGF modulation in CNS-research models.
GHRH(1-29); GRF(1-29)
A 29-amino-acid synthetic peptide corresponding to the first 29 residues of native human growth-hormone-releasing hormone. The canonical reference standard for GHRH receptor pharmacology research.
4 entries
Thymosin Beta-4 fragment; LKKTETQ-related
A synthetic fragment representing the active region of full-length Thymosin Beta-4 (the actin-binding 17-LKKTETQ-23 motif and surrounding residues). Characterised in published literature for actin sequestration and angiogenesis-related tissue-repair models.
TH9507; trans-3-hexenoyl-GHRH(1-44)NH₂
A 44-amino-acid GHRH analogue corresponding to native human GHRH(1-44) with a trans-3-hexenoyl moiety attached to the N-terminus to enhance enzymatic stability. Characterised in published literature for adipose-distribution research models.
Tα1; Thymalfasin
A 28-amino-acid acetylated peptide derived from the prothymosin alpha precursor, originally isolated from bovine thymic extracts. Widely cited in immunomodulatory research as a TLR-9 / TLR-2 modulator.
LY3298176
A 39-amino-acid synthetic peptide and dual agonist at the GIP and GLP-1 receptors with a C20 fatty-diacid moiety enabling albumin binding. The most cited dual incretin reference compound in current metabolic-research literature.
No common entries
No widely-cited research peptides start with U.
1 entry
Vasoactive Intestinal Polypeptide
A 28-amino-acid peptide hormone of the secretin / glucagon superfamily, released from neurons throughout the central and peripheral nervous system. The reference standard for VPAC1 / VPAC2 receptor research.
No common entries
No widely-cited research peptides start with W.
No common entries
No widely-cited research peptides start with X.
No common entries
No widely-cited research peptides start with Y.
No common entries
No widely-cited research peptides start with Z.
This Bible is maintained by Joe, founder of Lab77 Peptides. The data shown is drawn from the published peer-reviewed literature: PubMed primary research, ChemSpider / PubChem chemistry data, and where applicable the published patent record. Half-lives and molecular weights are rounded to literature precision and should be confirmed against your own laboratory characterisation before use.
If you spot an error or want a compound added to the next update, message us on WhatsApp +44 7943 410496 or email info@lab77peptides.co.uk. Real human reply, usually within working hours the same day.
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