Certificate of Analysis

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Insulin(cattle)

Molecular Formula:	C₂₅₄H₃₇₇N₆₅O₇₅S₆
Molecular Weight:	5800 (Approximately)
CAS No.:	11070-73-8
Storage (From the date of receipt):	3 years -20°C powder
Storage (From the date of receipt):	1 year -80°C in solvent
Image:

HPLC: 97.35% purity | NMR: Consistent with structure