Retatrutide (GLP3-Reta / LY3437943, CAS 2381089-83-2) is a lyophilized triple-receptor agonist research peptide supplied by Nextday Peptides for laboratory and analytical use. This listing is the GLP-3 Reta catalog SKU: retatrutide peptide powder in research vials with lot COA. Match the CAS and developmental code on the purchase order, then review the
retatrutide procurement checks.
Compound identity
- Names: Retatrutide, GLP3-Reta, GLP-3 Reta, GLP-3 R, LY3437943
- CAS: 2381089-83-2
- Targets (research): GLP-1R, GIPR, and GCGR (triple agonist)
- Form: Lyophilized retatrutide peptide powder in research vials
- Purity: As reported on the lot COA (HPLC method as stated on the certificate)
- Use: Scientific research use only — not for human or veterinary use
Documentation & quality
Order Retatrutide research peptide with traceable lot data. Match the CAS and LY3437943 identifier on the purchase order to this SKU so receiving does not file a cousin incretin. COAs support identity and purity checks for in-vitro and analytical workflows. Review batch documents in the
peptide COA library before protocols that require documented reference material.
Related research compounds
Incretin-pathway reference standards on this catalog also include
Semaglutide (GLP1-Sema) and
Tirzepatide (GLP2-Tirz).
Receptor class is listed on each SKU. The family index is
GLP and incretin research peptides.
Laboratory handling notes: retatrutide storage.
Preparation, solvent selection, concentration, storage, and handling must follow
the purchasing laboratory’s validated SOP, applicable SDS, and institutional protocol.
Kits, volume, and documentation
10-vial kits of the same listing sit next to single vials on this page. Customer-facing labels say kit, not box. Larger laboratory carts use
wholesale research peptides for eligibility, Volume Pricing, and quote notes.
Lot files: COA library. Use restriction:
what Research Use Only means
and the RUO peptides buyer’s guide.
Research use only
This material is sold strictly for laboratory research. It is not a drug, not FDA-approved, and not intended for compounding, clinical, or consumer use. By purchasing you confirm RUO compliance under our policies.
FAQ
What is Retatrutide (GLP3-Reta)?
Retatrutide (LY3437943, CAS 2381089-83-2) is a synthetic research peptide studied as a triple agonist at GLP-1, GIP, and glucagon receptors. Nextday Peptides supplies it as lyophilized laboratory powder only.
What is the CAS number for retatrutide?
CAS 2381089-83-2. Use that registry number plus LY3437943 on the purchase order so the vial matches the protocol, not a dual-agonist cousin.
How do laboratories order this SKU?
Use this catalog listing for U.S. research fulfillment. Read
key considerations before purchase
for COA, identity, and shipping checks. This is not a consumer or clinic channel.
Is retatrutide supplied as powder?
Yes. The catalog presentation is lyophilized retatrutide peptide powder in research vials, not a finished clinical solution.
How does Retatrutide differ from Tirzepatide or Semaglutide in research?
Semaglutide is typically studied as a GLP-1 receptor agonist. Tirzepatide as a dual GLP-1/GIP agonist. Retatrutide additionally engages the glucagon receptor, so protocols comparing single-, dual-, and triple-agonist reference compounds often include all three.
Do you provide a COA?
Lot documentation / COA available. Review the applicable certificate for reported test results and methodology. Nextday Peptides does not independently test each lot in-house.
Is this for human use?
No. All Nextday Peptides materials are research use only and are not for human or veterinary consumption, diagnosis, or treatment.
