What Is Retatrutide? A Research Compound Overview

Retatrutide has the molecular formula C219H342N44O68 and a molecular weight of 4757.4 g/mol. Its CAS number is 2381272-06-4. It is supplied as a white lyophilised powder for laboratory use and must be stored at -20°C in a desiccated environment.

What distinguishes Retatrutide from earlier generation compounds is its simultaneous targeting of three metabolic receptors:

• GLP-1R (Glucagon-Like Peptide-1 Receptor) is expressed on pancreatic beta cells and plays a central role in glucose-stimulated insulin secretion.
• GIPR (Glucose-Dependent Insulinotropic Polypeptide Receptor) is co-expressed with GLP-1R in several tissue types. Its role in energy homeostasis has been the subject of growing investigation.
• GCGR (Glucagon Receptor) mediates glucagon signalling and is involved in hepatic glucose output regulation. Its inclusion in a tri-agonist profile represents a mechanistically distinct approach compared to single or dual-receptor compounds.

Laboratory investigations involving Retatrutide have examined receptor binding kinetics, downstream signalling pathway activation in cell culture models, and comparative receptor occupancy studies. Researchers have used it to study the differential effects of simultaneous multi-receptor engagement versus sequential or single-receptor activation.

Retatrutide is not approved as a licensed medicine by the MHRA and is not available as a prescription medication in the United Kingdom. It is sold by Alluvi Labs strictly for in-vitro laboratory research use only.