Sensitive GLC procedure simultaneous determination of phenytoin and its major metabolite from plasma following single doses of phenytoin.

Abstract

An improved GLC procedure was developed for the simultaneous determination of phenytoin and its metabolite, 5-(p-hydroxyphenyl)-5-phenylhydantoin, in plasma and urine following enzyme hydrolysis. After extraction, the drug, the metabolite, and the internal standard, 5-(p-methylphenyl)-5-phenylhydantoin, are measured by GLC with flame-ionization detection as… (More)

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