Certificate of Analysis

Product Name

TB-500

Lot No.

3132148

Report Date

20 July 2026

Storage

-20°C

Sequence

Leu-Lys-Lys-Thr-Glu-Thr-Gln-Glu-Lys-Asn-Arg-Asn-Leu-Arg-Arg

Modifications

C-terminal

Test Results

Test Item	Specification	Result
Appearance	White to off-white lyophilized powder	Conforms
Molecular Weight (MS)	1416.7 ±2.0 Da	1417.7 Da
Purity (HPLC)	>98%	99.5%
Retention Time (HPLC)	±0.2 min of standard	Conforms
Assay	95.0-105.0%	99.2%
Related Substances (HPLC)	≤0.5% each / ≤2.0% total	Conforms
Solubility	Freely soluble in water	Conforms
Acetic Acid Content	≤5000 ppm	820 ppm
TFA Content	≤50 ppm	8 ppm
DCM Content	≤50 ppm	N.D.
DMF Content	≤100 ppm	N.D.
E. Coli	Absent	N.D.
Salmonella	Absent	N.D.

For Research Use Only - Not for Human Consumption