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Chemical communications (Cambridge, England)

Polymorphism and tautomeric preference in fenobam and the utility of NLO response to detect polymorphic impurities.


PMID 23000909

Abstract

Crystal structures of polymorphs and solvatomorphs of the potential anxiolytic drug fenobam exhibit an exclusive preference for one of the two possible tautomeric structures. A novel methodology based on nonlinear optical response has been successfully employed to detect the presence of a polymorphic impurity in a mixture of polymorphs.

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F0430
Fenobam, ≥98% (HPLC), solid
C11H11ClN4O2