Retatrutide Research Peptide

Retatrutide (also studied under the developmental code LY3437943) is a synthetic peptide that simultaneously targets the GIP, GLP-1, and glucagon receptors -- often described in the literature as a "triple agonist" or "GGG tri-agonist." It is supplied here as a lyophilized powder, independently tested for identity and purity, for laboratory research exclusively.

$105.00

Third-Party Tested
Batch Verified
Ships From USA

Strength

10mg

Multi-Vial Discounts

Sold out

Research use only. Not a drug, food, or cosmetic. Not for human or veterinary use, diagnostic use, or in vitro diagnostic use. Not evaluated by the FDA. No claim is made that this product treats, cures, mitigates, or prevents any disease.

Research Specifications

At a Glance

Purity Target: ≥99% (HPLC)
Form: Lyophilized powder
Fill Weight: 10mg per vial
Storage: Store lyophilized at -20°C; refrigerate after reconstitution

Chemical Information

Identity Data

Sequence: 39-residue GIP/GLP-1/glucagon triple agonist with Aib residues, α-Me-Leu, and a Lys-conjugated (AEEA)-γGlu-C20 diacid; C-terminal serinamide
Molecular Formula: C221H342N46O68
Molecular Weight: 4731.2 g/mol
CAS Number: 2381089-83-2

Identity data as published by the manufacturer/supplier and verified against each batch’s independent lab analysis. See Testing Methodology below.

Purity Specification

99%+ Purity, Independently Verified

Every batch we release is required to meet a minimum purity specification of 99% by HPLC before it ships. Purity is not a marketing claim here — it’s a published, batch-specific result from an independent, third-party analytical laboratory, available below for the current batch.

Current Batch Purity

COA pending

Testing Methodology

How Each Batch Is Verified

1
Independent Lab Analysis
Every batch is sent to a third-party analytical laboratory, unaffiliated with production, for identity and purity testing.
2
HPLC Purity Analysis
High-performance liquid chromatography (HPLC) is used to evaluate chromatographic purity by separating and measuring components present in the analyzed sample.
3
Certificate of Analysis
Results are published as a batch-specific COA, linked from this page and searchable in our COA archive.
4
Batch Traceability
Every vial is labeled with a batch number that maps directly to its published test results.

Purity ≠ Identity

Purity and molecular identity are related but distinct analytical characteristics. Review the applicable laboratory report to understand which attributes were tested.

Go deeper: how to read a peptide COA, HPLC vs LC-MS, and common COA red flags.

Batch Testing

Batch History

No batch data has been published for this product yet. Once a batch is tested, its results appear here and in the Certificate of Analysis database.

View Full Testing History

Storage Information

Handling This Research Reagent

Store lyophilized at -20°C; refrigerate after reconstitution

As with any lyophilized peptide reagent, minimize freeze-thaw cycles and avoid prolonged exposure to light, heat, or humidity before use. These are general laboratory-reagent storage practices, not instructions for administration of any kind.

Further reading: storing lyophilized research peptides and how research peptides are made.

Published Research Overview

What Has Been Studied

Retatrutide is an investigational compound studied in real human clinical trials, but has no FDA-approved drug product under any name — trial and regulatory status can change and should be independently verified. This research-labeled product has no connection to any pharmaceutical trial material.

Read the Full Research Overview

Current Batch COA

Certificate of Analysis

Lot-specific testing documentation for this product hasn’t been published yet. When it is, the lab, test date and results will appear here.

View Full Batch History →

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Research Use Only|

All products are intended for laboratory and research purposes only. Not for human or veterinary use. Not a drug. Not for diagnostic or therapeutic use.