Gas-chromatographic determination of mephenytoin and desmethylmephenytoin, after off-column alkylation

Autor: V A Raisys, A M Zebelman, S F MacMillan
Rok vydání: 1979
Předmět:
Zdroj: Clinical Chemistry. 25:172-175
ISSN: 1530-8561
0009-9147
DOI: 10.1093/clinchem/25.1.172
Popis: We describe a gas-liquid chromatographic method for determining mephenytoin and its active metabolite, desmethylmephenytoin, in human serum. 5-Methyl-5-phenylhydantoin is used as the internal standard. The method involves extraction of the drugs by adsorption onto charcoal and off-column derivatization to their pentyl derivatives. Peak height and concentration are linearly related and the day-to-day CV for therapeutic concentration is about 2 to 6%. No interferences by endogenous compounds or drugs commonly used for seizure control have been encountered.
Databáze: OpenAIRE