PubMed · 4558291
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R Hauschild, W Krause. 1972-04-15. [Late gestoses].. https://pubmed.ncbi.nlm.nih.gov/4558291/
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An improved high-performance liquid chromatographic method for the determination of chlormethiazole levels in plasma is described. The drug is extracted from plasma using commercially available reversed-phase extraction columns; recovery values obtained using Sep-Pak C18 and Bond Elut C1, C2, C4, C6, C8, C18 columns are compared. Separation was achieved by reversed-phase chromatography, using a mobile phase consisting of 0.025 M sodium acetate buffer, pH 4.5-acetonitrile (67:33) at a flow-rate of 1.6 ml/min in conjunction with a 15-cm Jones Chromatography Apex ODS column. The analytical column was protected by a Waters Assoc. Guard-Pak module containing a Guard-Pak CN insert. Using ultraviolet detection at 254 nm chlormethiazole levels in the region of 50 ng/ml can be measured with only 500 microliter of plasma.
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