title: Liquid chromatographic determination of isoniazid, pyrazinamide and rifampicin from pharmaceutical preparations and blood.
abstract: Isoniazid (IN), pyrazinamide (Pz) and rifampicin (Rf) are separated on YMC-ODS column. IN was derivatized with 2-fluorene-carboxaldehyde (FA). The separation was achieved using ethanol-chloroform-acetonitrile water by isocratic elution and detected at 337 nm. The detection limits were 0.11 ng, 0.2 ng and 13 ng/injection (5 microl) for IN, Pz and Rf, respectively. The method of analysis was applied to the pharmaceutical preparations and in the blood samples of the patients suffering from tuberculosis after undergoing chemotherapy with IN, Pz and Rf. The amounts quantitated in blood showed 0.97 to 1.58 microg/ml IN, 3.44 to 4.09 microg/ml Pz and 1.98 to 3.5 microg/ml Rf with coefficient of variations 0.8-1.8%, 0.9-1.3% and 0.8-2.1%, respectively.
authors.affiliation: Institute of Chemistry, University of Sindh, Jamshoro, Pakistan.
authors.forename: M Y
authors.initials: MY
authors.lastname: Khuhawar
authors.forename: F M A
authors.initials: FM
authors.lastname: Rind
mesh_terms: D000995:Antitubercular Agents / Q000032:analysis* / Q000097:blood; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D006801:Humans; D007538:Isoniazid / Q000032:analysis* / Q000097:blood; D004364:Pharmaceutical Preparations / Q000737:chemistry*; D011718:Pyrazinamide / Q000032:analysis* / Q000097:blood; D012293:Rifampin / Q000032:analysis* / Q000097:blood; D012680:Sensitivity and Specificity; D013056:Spectrophotometry, Ultraviolet
chemical_list: D000995:Antitubercular Agents; D004364:Pharmaceutical Preparations; D011718:Pyrazinamide; D007538:Isoniazid; D012293:Rifampin