Evidence review · Published July 22, 2026 · Compliance review August 20, 2026
Retatrutide identity and analytical reference
Retatrutide is a synthetic modified peptide identified in the literature as LY3437943 and by CAS 2381089-83-2. This page is limited to nomenclature, material identity, and analytical-documentation boundaries.
Scope boundary: this page documents nomenclature, structural reference information, and analytical-documentation limits. The Pep Labs catalog material is offered only for lawful nonclinical laboratory research and is not for human or veterinary use.
Retatrutide material identity
LY3437943 is the development identifier associated with retatrutide in the cited literature. The shorthand “GLP-3” may appear as a catalog label, but it is not a complete chemical identifier.
What the literature identity establishes
The cited papers identify LY3437943 and document the authors' defined study material. They may support nomenclature and structural comparison, but they are not analytical reports for independently supplied lots.
What verifies a supplied lot
Lot-specific documentation can report sample identity, method information, and results for the material tested. The receiving laboratory should confirm that the document identifier matches the supplied lot.
Primary sources
- Coskun et al., Cell Metabolism (2022), DOI 10.1016/j.cmet.2022.07.013 — identity and molecular design of LY3437943 study material.
- Li et al., Cell Discovery (2024), DOI 10.1038/s41421-024-00700-0 — structure of retatrutide in defined experimental complexes.
Literature and product documentation are different
A publication describes a study. A batch-specific Certificate of Analysis documents characteristics of a supplied research material. One does not substitute for the other.
Browse the COA library · Read the research-use policy
Prepared by The Pep Labs Research Editorial Team. This identity reference contains no preparation, dosing, administration, or human-use guidance.