Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Shean-Jeng Jong0
Yu-Sheng Lin0
Date of Patent
July 10, 2007
0Patent Application Number
108107990
Date Filed
March 29, 2004
0Patent Primary Examiner
Patent abstract
A method for purifying Piribedil includes mixing Piribedil solid having a purity of 98% by weight with water, boiling the mixture, adding slowly 95% ethanol to the boiling mixture to form a clear liquid, filtering the hot clear liquid, cooling the filtrate to obtain a white crystal having a purity of 99.8% by weight of Piribedil.
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