Not official USP-NF text
PHENYTOIN
PF LGS# Brand Type of Test Additional Information
19(3) L1 ZORBAX ODS Assay NULL
19(3) L1 ZORBAX ODS Chromatographic purity
19(3) L1 ZORBAX ODS Limit of . . . . . . . . . Limit of benzophenone.
17(3) G43 None Cited Organic volatile impurities See Method V 467