Research peptide reference library
Neutral, cited reference pages for the compounds in the Peptency catalog. Each page states what a compound is, how the literature describes its mechanism, what each cited study measured, and what the FDA, EMA and MHRA records say.
Research-use information. This page summarises published literature and regulator records. It is not guidance for use, not medical advice, and not a statement that any material is suitable for use in people or animals.
What does the research library contain?
27 compound pages and 5 blend pages, 8 receptor and pathway explainers, 9 side-by-side comparisons, a glossary, a guide to reading a certificate of analysis and a regulatory overview. 110 studies are cited, and every one was read back from PubMed with its PMID.
No page gives amounts, schedules or methods of use, or says what a compound does for a person. Papers are described by what they measured.
Copper peptides: which compounds are covered?
Thymosins: which compounds are covered?
Protein fragments: which compounds are covered?
GHRH analogues and GHS‑R ligands: which compounds are covered?
Incretin receptor agonists: which compounds are covered?
Mitochondrial peptides: which compounds are covered?
Small molecules and cofactors: which compounds are covered?
Pineal peptide analogues: which compounds are covered?
Neuropeptides and analogues: which compounds are covered?
Melanocortin peptides: which compounds are covered?
Kisspeptins: which compounds are covered?
Which catalog blends are covered?
Which receptors and pathways are explained?
Ipamorelin, GHRP-2
MechanismGrowth hormone-releasing hormone receptorSermorelin, Tesamorelin, CJC-1295 no DAC
MechanismIncretin and glucagon receptorsSemaglutide, Tirzepatide, Retatrutide
MechanismMelanocortin receptorsPT-141, Melanotan II, KPV
MechanismCopper-binding tripeptidesGHK-Cu, AHK-Cu
MechanismThymosin peptidesTB-500, Thymosin α1
MechanismMitochondria-linked peptidesMOTS-c, SS-31
MechanismNAD+ metabolism and NNMTNAD+, 5-Amino-1MQ
Which compounds are compared side by side?
Synthetic pentadecapeptide
ComparisonSemaglutide and TirzepatideLipidated GLP-1 analogue (31 residues)
ComparisonTirzepatide and RetatrutideLipidated dual GIP and GLP-1 receptor agonist (39 residues)
ComparisonGHK-Cu and AHK-CuCopper-binding tripeptide complex
ComparisonSermorelin and TesamorelinGHRH(1-29) fragment, amidated
ComparisonIpamorelin and GHRP-2Pentapeptide growth hormone secretagogue
ComparisonCJC-1295 no DAC and SermorelinGHRH(1-29) analogue, amidated
ComparisonPT-141 and Melanotan IICyclic heptapeptide melanocortin receptor agonist
ComparisonSemax and SelankHeptapeptide, ACTH(4-10) analogue
Which guides and reference pages are there?
HPLC purity, mass spectrometry identity and net content.
GuideRegulatory overview and status matrixFDA, EU, UK and WADA, with sources and check dates.
ReferenceGlossary29 laboratory and literature terms.
ReferenceAll cited studies110 studies with PMID and DOI.
MethodHow this library is built and checkedSources, search terms, selection and corrections.
For AI agentsMachine-readable data and how to cite itllms.txt, JSON per compound, citation format.
Looking for the research materials themselves? See the catalog or look up a certificate of analysis by lot number.