Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
July 6, 2010
Patent Application Number
11997435
Date Filed
August 2, 2006
Patent Primary Examiner
Patent abstract
Crude sevoflurane product comprising unacceptably high levels of HFIP can be purified by combining the crude sevoflurane product with sufficient water to produce a multiphase mixture, fractionally distilling the multiphase mixture, removing sevoflurane from the distilling multiphase mixture as an azeotrope with water, and separating substantially pure sevoflurane from the azeotrope.
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