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A simultaneous determination of rifampin and 25-desacetylrifampin in cerebrospinal fluid and plasma of rabbit by liquid chromatography

   
@article{APS5258,
	author = {Kelvin Chan},
	title = {A simultaneous determination of rifampin and 25-desacetylrifampin in cerebrospinal fluid and plasma of rabbit by liquid chromatography},
	journal = {Acta Pharmacologica Sinica},
	volume = {8},
	number = {6},
	year = {2016},
	keywords = {},
	abstract = {A liquid chromatographic assay was modified for the simultaneous determination of rifampin (R) and its major metabolite, 25-desacetylrifampin (25-DR) in cerebrospinal fluid (CSF) and plasma in the rabbit. R, 25-DR and the internal standard, p-methylaminobenzoic acid (PMAB), were in an acidified sample at pH 4.2 containing 2% ascorbic acid as anti-oxidant and extracted into organic solvent (diethylether:dichloromethane, 3:2). The residue of the solvent extract was dissolved in 75μl methanol. The concentration was analysed by a liquid chromatograph consisting of a LDC pump using a reversed phase pre-column (30μm C8) linked to a radial pak column (10μm C8). The compounds were eluted with acetonitrile-l0 mmol/L phosphate buffer, KH2PO4, at pH 3.5 (40:60, vol:vol). The eluates are detected at 254 nm. The assay has been used to investigate the disposition of R and 25-DR in CSF and plasma of the rabbits.},
	issn = {1745-7254},	url = {http://www.chinaphar.com/article/view/5258}
}