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Certificate of Analysis

Tolbutamide (HLS 831)

Molecular Formula:	C₁₂H₁₈N₂O₃S
Molecular Weight:	270.35
CAS No.:	64-77-7
Storage (From the date of receipt):	3 years -20°C powder
	1 year -80°C in solvent
Image:

HPLC: 99.88% purity | NMR: Consistent with structure