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Certificate of Analysis

Independent third-party laboratory verification of purity and identity.

Product Name
Retatrutide
LY-3437943 · Triple receptor agonist (GLP-1 / GIP / Glucagon)
Batch / Lot Number
RA-2026-0703-A
CAS Number
2381089-83-2
Date of Analysis
3 July 2026
Molecular Formula
C₂₂₁H₃₄₃N₅₁O₆₄
Molecular Weight
4731.2 Da

Analytical Results

TestMethodSpecificationResultStatus
AppearanceVisualWhite lyophilized powderWhite lyophilized powder Pass
Purity (HPLC)RP-HPLC≥ 99.0%99.34% Pass
Identity (MS)ESI-MSMW = 4731.2 ± 1.0 Da4731.2 Da Pass
Water ContentKarl Fischer≤ 5.0%2.1% Pass
Residual SolventsGC-MS≤ 0.5% total0.08% Pass
Verified by Independent Laboratory

This Certificate of Analysis is issued for the batch specified above. All testing was performed in accordance with current GMP guidelines and ISO 17025 accredited methods. This product is intended for in-vitro research use only.