Simultaneous Estimation of Ciprofloxacin Hydrochloride, Ofloxacin, Tinidazole and Ornidazole by Reverse Phase – High Performance Liquid Chromatography
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School of Pharmaceutical Sciences, Shobhit University, Meerut, 250110, India
Faculty of Pharmacy, Northern India Engineering College, Lucknow, 227105, India
Faculty of Pharmacy, Babu Banarasi Das National Institute of Technology and Management, Lucknow, 227105, India
Emeritus Medical Scientist (ICMR), Central Drug Research Institute, Lucknow, India
Mukesh Maithani   

School of Pharmaceutical Sciences, Shobhit University, Meerut, 250110, India
Publication date: 2017-10-06
Eurasian J Anal Chem 2009;4(2):161–167
A new, simple, rapid, selective, precise and accurate isocratic reverse phase high performance liquid chromatography assay has been developed for simultaneous estimation of Ciprofloxacin Hydrochloride, Ofloxacin, Tinidazole and Ornidazole in tablet formulations. The separation was achieved by using C-18 column (RP-18, 5µ) coupled with a guard column of same material, in isocratic mode with mobile phase mixture of Acetonitrile: Water: Tri ethylamine (25:75:1). The pH of mobile phase was adjusted to 6.0 ± 0.1 with 50% ortho phosphoric acid. The flow rate was 1.0 mLmin-1 and the separated drugs were detected using UV detector at the wavelength of 300 nm. The retention time of Ciprofloxacin Hydrochloride, Ofloxacin, Tinidazole, and Ornidazole was noted to be 2.7, 3.5, 4.5, and 5.8 minutes, respectively, indicative of rather shorter analysis time (within 6 minutes). The method was validated with respect to stability, specificity, accuracy, precision, linearity, range, LOD and LOQ. The proposed method was found to be accurate, reproducible, and consistent. It was successfully applied for the analysis of these drugs in marketed formulations and could be effectively used for the routine analysis of formulations containing any one of the above drugs, or a combination, without any alteration in the chromatographic conditions
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