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  • Title: Quantitative determination of naltiazem in human plasma by gas chromatography/mass spectrometry.
    Author: Davis PP, Choma N, Crews T, Fukuda EK.
    Journal: Biomed Environ Mass Spectrom; 1989 Nov; 18(11):978-82. PubMed ID: 2620159.
    Abstract:
    A gas chromatographic/mass spectrometric procedure has been developed for the quantification of a diltiazem analog, naltiazem, in human plasma. The assay utilizes an extraction at neutral pH with hexane:ethylene dichloride:methyl-t-butyl ether (70:20:10), selective ion monitoring, methane or ammonia positive chemical ionization mass spectrometry and stable isotope dilution. The method has been used to analyze plasma concentrations of naltiazem in clinical samples over a range of 2-200 ng ml-1, using 1 ml of plasma.
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