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Certificate of Analysis

Sildenafil Mesylate

Molecular Formula:	C₂₂H₃₀N₆O₄S.xCH₄O₃S
Molecular Weight:	474.58(free base)
CAS No.:	1308285-21-3
Storage (From the date of receipt):	3 years -20°C powder
	1 year -80°C in solvent
Image:

HPLC: 99.45% purity | NMR: Consistent with structure