| Literature DB >> 1233264 |
N Kallberg, S Agurell, O Ericsson, E Bucht, B Jalling, L O Boréus.
Abstract
A method for the quantitative determination of phenobarbital and free and conjugated p-hydroxyphenobarbital in urine samples is described. The method includes initial extraction, purification on a small chromatographic column and finally determination by gas chromatography. The barbituric acids are methylated by trimethylanilinium hydroxide which serves as a "flash heater" methylating agent. The conjugate of p-hydroxyphenobarbital, which appears to be a glucuronide, is hydrolysed with hydrochloric acid.Entities:
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Year: 1975 PMID: 1233264 DOI: 10.1007/bf00614013
Source DB: PubMed Journal: Eur J Clin Pharmacol ISSN: 0031-6970 Impact factor: 2.953