# Peptide Properties

> Scientific reference for research peptides and related compounds: verified chemical identity (PubChem-matched formulas, molecular weights, CAS numbers, InChIKeys), compound classes, and cited summaries of published research. Not medical advice.

Each compound page has a Markdown version at `<page-url>?format=md`.

## Copper & Cosmetic Peptides

- [GHK-Cu (Copper Tripeptide-1)](https://peptideproperties.com/compounds/ghk-cu/): GHK-Cu is the copper(II) complex of glycyl-L-histidyl-L-lysine (GHK), a tripeptide that occurs naturally in human plasma, saliva and urine. Also called copper tripeptide-1 or prezatide copper, it is used as… (C14H23CuN6O4+; 402.92 g/mol; CAS 89030-95-5)

## Growth Hormone Secretagogues & GHRH Analogs

- [Tesamorelin](https://peptideproperties.com/compounds/tesamorelin/): Tesamorelin is a synthetic 44-amino-acid analogue of human growth hormone-releasing hormone (GHRH) carrying an N-terminal trans-3-hexenoyl group. It stimulates release of the body's own growth hormone and is FDA approved… (C221H366N72O67S; 5136 g/mol; CAS 218949-48-5)

## Incretin & Metabolic Receptor Agonists

- [Retatrutide](https://peptideproperties.com/compounds/retatrutide/): Retatrutide is a 39-residue synthetic lipidated peptide that acts as a triple agonist at the glucose-dependent insulinotropic polypeptide (GIP), glucagon-like peptide-1 (GLP-1) and glucagon receptors. Developed by Eli Lilly and… (C221H342N46O68; 4731 g/mol; CAS 2381089-83-2)

## Mitochondrial & Metabolic Research Compounds

- [MOTS-c](https://peptideproperties.com/compounds/mots-c/): MOTS-c is a 16-amino-acid mitochondrial-derived peptide encoded by a short open reading frame within the mitochondrial 12S rRNA gene. First reported in 2015, it has been studied mainly in cell… (C101H152N28O22S2; 2174.6 g/mol; CAS 1627580-64-6)

## Tissue-Repair Peptides

- [BPC-157](https://peptideproperties.com/compounds/bpc-157/): BPC-157 is a synthetic 15-amino-acid peptide (pentadecapeptide) with the sequence GEPPPGKPADDAGLV, originally described as isolated from human gastric juice and studied mainly in animal models of tissue repair. Its molecular… (C62H98N16O22; 1419.5 g/mol; CAS 137525-51-0)

## Research notes

- [How to Read a Peptide Certificate of Analysis (HPLC & Mass Spec)](https://peptideproperties.com/research/how-to-read-peptide-certificate-of-analysis/): A practical guide to reading a peptide certificate of analysis: what HPLC purity measures and misses, how mass spec confirms identity, which impurities matter, and…

## Optional

- [Full text of all compound profiles](https://peptideproperties.com/llms-full.txt)
- [Compound library](https://peptideproperties.com/compounds/)