The molecule: AEDG chemistry

Four residues, one negatively charged little peptide

Epitalon’s chemistry is deliberately plain: the tetrapeptide Ala-Glu-Asp-Gly, molecular formula around C14H22N4O9, with two acidic residues that leave it net-negative at body pH. This unit builds the structure, walks the residue properties, and then confronts the part that matters most in a gray market: identity, purity, and stability.

Because a peptide’s label is only as trustworthy as its analytical file, the practical chemistry here is really about what a buyer can and cannot verify.