Certificate of Analysis

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Tezacaftor (VX-661)

Molecular Formula:	C₂₆H₂₇F₃N₂O₆
Molecular Weight:	520.5
CAS No.:	1152311-62-0
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: 99.96% purity | NMR: Consistent with structure