Retatrutide

A chemistry-only comparison of Retatrutide, Tirzepatide, and Semaglutide by receptor selectivity (triple vs dual vs mono), CAS, molecular formula, and verified in vitro potency — plus a resolution of the two average molecular weights each compound circulates under, and why the sodium explanation for the difference is arithmetically impossible.

The full Certificate of Analysis data for Retatrutide lot 06242026, issued by BTLabs: 99.8% HPLC peptide-assay purity, 22.2 mg content against a 20 mg label claim, FTIR identity confirmation, and a 1:2.9 peptide-to-excipients ratio — transcribed in full, with the scanned certificate available to download.

The canonical Retatrutide (LY3437943) chemical reference: verified specs, triple receptor agonist profile (GIP/GLP-1/glucagon) with in vitro EC50 data, and laboratory reconstitution/handling.