Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
François Scherninski0
Joanne Tran-Guyon0
Date of Patent
April 14, 2009
0Patent Application Number
105333770
Date Filed
October 28, 2003
0Patent Primary Examiner
Patent abstract
The invention concerns high purity phthalcin derivatives enabling their use for medical applications or in the field of biotechnology, as well as their preparation method whereby a phthatic anhydride derivative is condensed with a naphthol or phenol derivative in an organic acid ester and the crystals of the resulting condensate are converted by action of a strong acid or one of its precursors in anhydrous medium.
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