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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 19, Number 5
BKCSDE 19(5)
May 20, 1998 

Assay of Midazolam in Human Plasma by Gas-Liquid Chromatography with Nitrogen-Phosphorus Detection
Ho-Sang Shin*, Choon Pyo Hong, Yun-Suk Oh-Shin, Bokyung Kang, Kyungok Lee, Kyupum Lee
A sensitive and specific method is described for the determination of midazolam in human plasma. The drug was extracted from 1 mL of carbonate buffered plasma (pH 9.6) with 8 mL of diethyl ether. Famprofazone was used as internal standard. The organic phase was evaporated to dryness. The residue was dissolved in methanol for the direct analysis by gas chromatograph-nitrogen phosphorus detector system. In the concentration range of 1-5000 ng/mL, the calibration curve was linear. The coefficients of variation from the precision test were
524 - 526
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