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Metabolic · Research Compound

Retatrutide

LY3437943

A triple GIP / GLP-1 / glucagon receptor agonist studied for multi-incretin metabolic signaling.

Retatrutide research peptide vial — Ethos Bio

01At a Glance

CompoundRetatrutide
Also known asLY3437943
CAS Number2381089-83-2
Molecular Weight4,731.32 g/mol
Sequence / FormSynthetic triple-agonist peptide
ClassificationMetabolic research compound
AppearanceLyophilized powder
Purity≥99% (HPLC · MS-verified)
Storage2–8°C; -20°C for long-term
Intended UseResearch Use Only

02Mechanism of Action

Retatrutide is a synthetic triple agonist targeting the GIP, GLP-1, and glucagon receptors simultaneously. Research models investigate the combined contribution of all three pathways to glucose regulation, lipid metabolism, and energy expenditure.

The triple-receptor mechanism distinguishes it as a next-generation incretin research compound and a frequent subject of comparative agonist studies.

Research framing only · No therapeutic, dosing, or human-use claims

03Research Applications

04Purity & Verification

Every Ethos Bio lot of Retatrutide is analyzed by reverse-phase HPLC and independently confirmed by mass spectrometry through our third-party testing partner, Janoshik Analytical. A signed Certificate of Analysis documenting identity and ≥99% purity is provided for every lot.

View the Retatrutide Certificate of Analysis

Independent third-party HPLC & mass-spec verification. The COA shipped with your order reflects your specific lot.

View COA →

05Frequently Asked Questions

What is Retatrutide?

Retatrutide is a synthetic triple agonist of the GIP, GLP-1, and glucagon receptors, studied for multi-incretin metabolic signaling in research models. It is sold for research use only.

How is Retatrutide different from Tirzepatide?

Retatrutide is a triple agonist (GIP, GLP-1, and glucagon receptors), while Tirzepatide is a dual agonist (GIP and GLP-1). The added glucagon-receptor activity is the key research distinction.

What is Retatrutide\u2019s molecular weight?

Retatrutide has a molecular weight of approximately 4,731.32 g/mol and CAS number 2381089-83-2.

06Related Metabolic Compounds