For laboratory research use only · Not for human or veterinary use
For laboratory research use onlyNot for human or animal consumption

Lyophilized Peptides

Retatrutide Research Reference

LY3437943

A synthetic, lipidated peptide research reference characterized in the literature as an agonist of human GCGR, GLP-1R and GIPR.

CatalogGR-PW
ManufacturerRemetide
PurityTarget ≥99% by RP-HPLC; lot result controls
PackResearch pack · supplied amount shown on product record
Price range: $75.00 through $449.00 — or from Original price was: $75.00.Current price is: $63.75. / month Current catalog price; lot availability controls fulfillment.
AvailabilityIn stock
Subscribe monthly and save 15%$63.75 per delivery. The same price applies to the first order and recurring renewals.

82 lot COAs on this record

01Lot documentationCOA and analytical-record model
02Defined specificationMethod and result remain lot specific
03Tracked fulfillmentShipping method and lot allocation confirmed at order review
04Responsible useNon-clinical laboratory context

Lot documentation

Current Certificate of Analysis

82 approved certificates are attached to this product record.

Reported 2026-09-29Lot GR30-092026-199.95% purity · 34.17 mg
Open COA
Reported 2026-09-17Lot GR24-092026-199.95% purity · 30.40 mg
Open COA
Reported 2026-09-17Lot GR12-092026-199.98% purity · 14.35 mg
Open COA
View all historical COAs (79)
Reported 2026-08-04Lot GR12-082026-199.80% purity · 15.54 mg
Open COA
Reported 2026-08-04Lot GR12-082026-199.80% purity · 15.54 mg
Open COA
Reported 2026-07-28Lot GR24-082026-199.98% purity · 15.55 mg
Open COA
Reported 2026-07-28Lot GR24-082026-199.98% purity · 15.55 mg
Open COA
Reported 2026-07-28Lot GR24-082026-199.98% purity · Vial 1: 15.70 mg, Vial 2: 15.40 mg
Open COA
Reported 2026-06-07Lot GR06-062026-499.91% purity · 6.86 mg
Open COA
Reported 2026-06-07Lot GR06-062026-499.91% purity · 6.86 mg
Open COA
Reported 2026-05-14Lot GR48-052026-499.91% purity · 48.44 mg
Open COA
Reported 2026-05-14Lot GR48-052026-199.47% purity · 51.82 mg
Open COA
Reported 2026-05-14Lot GR48-052026-199.47% purity · 51.82 mg
Open COA
Reported 2026-05-14Lot GR24-052026-199.82% purity · 29.43 mg
Open COA
Reported 2026-05-14Lot GR48-052026-499.91% purity · 48.44 mg
Open COA
Reported 2026-05-14Lot GR12-052026-499.72% purity · 14.01 mg
Open COA
Reported 2026-05-14Lot GR12-052026-799.95% purity · 13.89 mg
Open COA
Reported 2026-05-14Lot GR12-052026-799.95% purity · 13.89 mg
Open COA
Reported 2026-05-14Lot GR24-052026-199.82% purity · 29.43 mg
Open COA
Reported 2026-05-14Lot GR12-052026-799.95% purity · 13.89 mg
Open COA
Reported 2026-05-14Lot GR12-052026-499.72% purity · 14.01 mg
Open COA
Reported 2026-05-08Lot GR12-052026-299.70% purity · 13.11 mg
Open COA
Reported 2026-05-08Lot GR12-052026-299.70% purity · 13.11 mg
Open COA
Reported 2026-04-22Lot GR24-042026-499.92% purity · 23.96 mg
Open COA
Reported 2026-04-22Lot GR24-042026-499.92% purity · 23.96 mg
Open COA
Reported 2026-04-22Lot GR24-042026-499.92% purity · 23.96 mg
Open COA
Reported 2026-04-19Lot Gr06-042026-199.98% purity · 8.22 mg
Open COA
Reported 2026-04-19Lot GR24-042026-199.99% purity · 31.69 mg
Open COA
Reported 2026-04-19Lot GR24-042026-199.99% purity · 31.69 mg
Open COA
Reported 2026-04-19Lot Gr06-042026-199.98% purity · 8.22 mg
Open COA
Reported 2026-04-19Lot GR24-042026-199.99% purity · 31.69 mg
Open COA
Reported 2026-03-24Lot GR12-032026-199.80% purity · 15.75 mg
Open COA
Reported 2026-03-24Lot GR12-032026-199.80% purity · 15.75 mg
Open COA
Reported 2026-03-24Lot GR12-032026-199.80% purity · 15.75 mg
Open COA
Reported 2026-03-24Lot GR12-032026-199.80% purity · 15.75 mg
Open COA
Reported 2026-03-12Lot GR12-032026-499.89% purity · 13.94 mg
Open COA
Reported 2026-03-12Lot GR12-032026-499.89% purity · 13.94 mg
Open COA
Reported 2026-02-05Lot GR12-02022026-J99.555% purity
Open COA
Reported 2026-02-05Lot GR12-02022026-J99.555% purity · 14.06 mg
Open COA
Reported 2026-01-21Lot GR12-0119202G-H99.845% purity
Open COA
Reported 2026-01-21Lot GR12-01192026-H99.845% purity · 11.89 mg
Open COA
Reported 2026-01-17Lot RETA240105202R99.954% purity
Open COA
Reported 2026-01-08Lot GB12-61062026-J99.477% purity
Open COA
Reported 2026-01-08Lot GR12-01062026-J99.979% purity
Open COA
Reported 2026-01-08Lot GR12-0106326-J99.907% purity
Open COA
Reported 2026-01-08Lot GR12-0106202G-J99.477% purity · 13.77 mg
Open COA
Reported 2026-01-07Lot RETA2601652026-R99.954% purity · 26.98 mg
Open COA
Reported 2025-12-24Lot GR24-12222025-J99.856% purity
Open COA
Reported 2025-12-24Lot RETA24121630225-1299.759% purity
Open COA
Reported 2025-12-24Lot GR48-1222025-J99.815% purity · 33.37 mg
Open COA
Reported 2025-12-24Lot RETA241216Z025-1299.759% purity · 26.06 mg
Open COA
Reported 2025-12-24Lot GR24-12220325-J99.856% purity · 25.59 mg
Open COA
Reported 2025-12-24Lot GR24-12222025-J99.856% purity · 25.59 mg
Open COA
Reported 2025-12-19Lot GIR10-12172025-H99.917% purity · 10.55 mg
Open COA
Reported 2025-12-17Lot RET06 1209262S-1299.093% purity
Open COA
Reported 2025-12-17Lot RET06 12092625-1299.093% purity · 6.34 mg
Open COA
Reported 2025-12-11Lot GR12-12082025-H99.949% purity · 15.59 mg
Open COA
Reported 2025-12-08Lot RET1211122025-2099.976% purity
Open COA
Reported 2025-12-08Lot RET12111220Z5-2099.976% purity · 13.89 mg
Open COA
Reported 2025-10-01Lot RET1209212025-1899.96% purity · 15.32 mg
Open COA
Reported 2025-09-25Lot GR24-092220S-199.896% purity · 28.04 mg
Open COA
Reported 2025-09-25Lot GR12-09222025-J99.908% purity · 17.48 mg
Open COA
Reported 2025-09-25Lot GR12-09222025-J99.908% purity · 17.48 mg
Open COA
Reported 2025-09-25Lot GR24-09222025-J99.896% purity · 28.04 mg
Open COA
Reported 2025-09-25Lot RET2409182025-1099.962% purity · 27.33 mg
Open COA
Reported 2025-09-25Lot GR12-09222025-J99.908% purity
Open COA
Reported 2025-09-25Lot GR24-09222025-J99.896% purity
Open COA
Reported 2025-08-08Lot GR2408062025-J-199.97% purity · 28.3 mg
Open COA
Reported 2025-08-08Lot GR0608062025-J99.97% purity · 5.22 mg
Open COA
Reported 2025-08-08Lot GR12080620253-199.96% purity · 15.30 mg
Open COA
Reported 2025-08-08Lot GR2408062025-J99.97% purity · 28.3 mg
Open COA
Reported 2025-08-08Lot GR0608062025-J99.97% purity · 8.22 mg
Open COA
Reported 2025-08-08Lot GR2408062025-J99.97% purity
Open COA
Reported 2025-08-08Lot GR1208062025-J99.96% purity
Open COA
Reported 2025-08-08Lot GR1208062025-J99.96% purity · 15.30 mg
Open COA
Reported 2025-08-06Lot RET12802202S-1699.93% purity · 12.72 mg
Open COA
Reported 2025-08-06Lot RET1208022025-1699.93% purity
Open COA
Reported 2025-08-06Lot RET1208022025-1699.93% purity · 12.72 mg
Open COA
Reported 2025-07-24Lot RET120721025-1599.84% purity · 13.28 mg
Open COA
Reported 2025-07-04Lot RETA24072025-N99.96% purity · 29.76 mg
Open COA
Reported 2025-06-14Lot N-RFT1206022025-1399.91% purity · 14.32 mg
Open COA
Reported 2025-06-14Lot N-RET2406112025-0699.92% purity · 29.49 mg
Open COA

Technical information

Chemical & material record

Presented in a scientific-catalog format so the material can be evaluated by identity, form and documentation before purchase.

Identity
Retatrutide research reference
Synonyms
LY3437943
CAS number
2381089-83-2
Molecular formula
C221H342N46O68
Formula weight
4,731.3 Da
Sequence / identity note
39-residue modified peptide; sequence controlled in the technical record
Manufacturer
Remetide
Manufacturing role
Custom peptide synthesis and manufacture
Form
Lyophilized, non-sterile research material
Purity specification
Target ≥99% by RP-HPLC; lot result controls
Storage
-20°C, dry and protected from light; follow lot documentation
Pack size
Research pack · supplied amount shown on product record
Catalog number
GR-PW

Research context

Published research & product context

Published literature is presented separately from lot-specific identity, purity and analytical results.

Retatrutide (LY3437943) is a 39-residue modified peptide studied as a triple agonist of the glucagon receptor (GCGR), glucagon-like peptide-1 receptor (GLP-1R) and glucose-dependent insulinotropic polypeptide receptor (GIPR). Published receptor studies used human receptor-expressing HEK293 systems to characterize cAMP signaling.

In those cellular assays, reported EC50 values were 5.79 nM at GCGR, 0.775 nM at GLP-1R and 0.0643 nM at GIPR. Separate non-clinical mouse studies evaluated glucose tolerance, gastric emptying and metabolic endpoints. These observations describe the cited studies, not a specification or expected result for this lot.

Selected published findings

  • Induced cAMP accumulation in HEK293 cells expressing human GCGR, GLP-1R or GIPR.
  • Was evaluated in mouse models for glucose-tolerance, gastric-emptying and diet-induced-obesity endpoints.
References and product citations 2
  1. Coskun, T., Urva, S., Roell, W.C., et al. LY3437943, a novel triple glucagon, GIP, and GLP-1 receptor agonist: from discovery to clinical proof of concept. Cell Metabolism 34(9), 1234–1247 (2022).
  2. Urva, S., O’Farrell, L., Du, Y., et al. The novel GIP, GLP-1 and glucagon receptor agonist retatrutide delays gastric emptying. Diabetes, Obesity and Metabolism 25(9), 2784–2788 (2023).

Literature interpretation: This summary describes published experimental literature and is not a lot specification, clinical claim, use instruction or representation that the supplied research material will reproduce a published result. This record intentionally excludes dosing, administration, clinical outcomes, patient eligibility and therapeutic comparisons.

Intended laboratory context

Illustrative applications

  • Analytical method development
  • Identity and retention-time comparison
  • Qualified receptor-assay research
  • Non-clinical laboratory investigation

Documentation package

Documentation

  • PDFIllustrative Certificate of AnalysisSample
  • PDFAnalytical summarySample
  • PDFMaterial handling statementSample
  • PDFProject-specific specificationSample
Responsible-use statement

Not offered for clinical, diagnostic, compounding, therapeutic, human or veterinary use. Current labeling, specification and lot documentation control.

Need a current record?

Documentation before decision-making.

Reference GR-PW and the applicable lot when contacting technical support. Published files support evaluation but do not replace the approved lot COA or material specification.

View documentation model
¿Prefieres español? Ver en español