Retatrutide (LY3437943): A Research Overview

Retatrutide, also designated LY3437943, is a synthetic peptide studied as a triple-receptor agonist. In published preclinical and clinical research it is described as engaging three incretin and metabolic receptor systems at once — the GLP-1, GIP, and glucagon receptors. That multi-receptor profile is what distinguishes it from single- and dual-agonist research compounds.

Identity and molecular data

• Compound: Retatrutide (LY3437943)
• CAS: 2381609-61-4
• Molecular weight: approximately 4,731 Da
• Format: lyophilized (freeze-dried) powder, supplied as a sealed research vial

These identifiers let a laboratory confirm that received material matches what was ordered. A batch Certificate of Analysis reports identity — typically by liquid chromatography–mass spectrometry — and reported chromatographic purity by HPLC, tied to a specific lot number.

Why the triple-receptor profile matters to researchers

Single-receptor and multi-receptor agonists are studied as distinct tools. Because retatrutide engages glucagon-receptor signaling in addition to the two incretin receptors, it is used in research models examining the combined pharmacology of these pathways. TagPep does not make, and researchers should not infer, any claim about clinical outcomes — published findings belong to the underlying studies, not to a supplied research material.

Documentation and handling

Research-grade material is only as useful as its documentation. Before using retatrutide in any workflow, confirm that the lot number on the vial matches the lot on the available analytical report, and follow general storage and handling guidance for lyophilized peptides. Reported purity from HPLC describes the proportion of the target compound among detected peaks; it does not, by itself, establish sterility or freedom from every possible contaminant. See identity, purity and quantity for why these are three separate measurements.

The TagPep Retatrutide 60 mg research vial is supplied with batch-linked documentation for laboratory research use only.

For laboratory research use only. Not for human or veterinary use. Not for human consumption. Not for diagnostic or therapeutic use.