Certificate of Analysis

Product Name

Retatrutide

Lot No.

3132027

Report Date

05 May 2026

Storage

-20°C

Sequence

His-Ser-Gln-Gly-Thr-Phe-Thr-Ser-Asp-Tyr-Ser-Lys-Tyr-Leu-Asp-Ser-Arg-Arg-Ala-Gln-Asp-Phe-Val-Gln-Trp-Leu-Met-Asn-Thr-Lys-Arg-Asn-Arg-Asn-Asn-Ile-Ala

Modifications

C20 fatty diacid by γ-Glu linker + spacer

Test Results

Test Item	Specification	Result
Appearance	White to off-white lyophilized powder	Conforms
Molecular Weight (MS)	4731.3 ±1.0 Da	4731.5 Da
Purity (HPLC)	>98%	99.4%
Retention Time (HPLC)	+0.2 min of standard	Conforms
Related Substances (HPLC)	≤0.5% each / ≤1.5% total	0.5%
Solubility	Freely Soluble in Water	Conforms
Acetic Acid Content	≤5000 ppm	1180 ppm
TFA Content	≤50 ppm	11 ppm
DCM Content	≤50 ppm	N.D.
DMF Content	≤100 ppm	N.D.
Total Aerobic Count	≤100 CFU/g	<10 CFU/g
Yeast & Molds Count	≤10 CFU/g	<10 CFU/g
Endotoxins	≤0.5 EU/mg	<0.05 EU/mg
E. Coli & Salmonella	Absent	N.D.

For Research Use Only — Not for Human Consumption