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Scientia Pharmaceutica is published by MDPI from Volume 84 Issue 3 (2016). Articles in this Issue were published by another publisher in Open Access under a CC-BY (or CC-BY-NC-ND) licence. Articles are hosted by MDPI on mdpi.com as a courtesy and upon agreement with Austrian Pharmaceutical Society (Österreichische Pharmazeutische Gesellschaft, ÖPhG).
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Simple and Sensitive Stability-Indicating Ion Chromatography Method for the Determination of Cyclopropylamine in Nevirapine and Moxifloxacin Hydrochloride Drug Substances

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Aurobindo Pharma Limited Research Centre, 313, Bachupally, Hyderabad-500 090, Andhra Pradesh, India
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J. N. T. University, Kukatpally, Hyderabad-500085, Andhra Pradesh, India
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Authors to whom correspondence should be addressed.
Sci. Pharm. 2012, 80(1), 77-88; https://doi.org/10.3797/scipharm.1107-14
Received: 12 July 2011 / Accepted: 20 October 2011 / Published: 20 October 2011
A simple and sensitive ion chromatography method has been developed for the determination of cyclopropylamine (CPA) in nevirapine (NEV) and moxifloxacin HCl (MOX) pharmaceutical drug substances. Efficient chromatographic separation was achieved on a Metrosep C4, 5 μm (250 mm x 4.0 mm) column. The mobile phase consists of 5 mM hydrochloric acid containing 10% (v/v) acetonitrile and was delivered in an isocratic mode at a flow rate of 0.9 mL min−1 at 27°C. A conductometric detector was used for the detection of the analyte. The drug substances were subjected to stress conditions including oxidation, thermal, photolytic and humidity for the evaluation of the stability-indicating nature of the method. The method was validated for specificity, precision, linearity, accuracy and solution stability. The limit of detection (LOD) and limit of quantification (LOQ) values are 0.10 μg mL−1 and 0.37 μg mL−1 respectively. The linearity range of the method is between 0.37 μg mL−1 and 1.5 μg mL−1 and the correlation coefficient is found to be 0.9971. The average recoveries of CPA in NEV and MOX are 97.0% and 98.0%, respectively.
Keywords: Ion chromatography; Cyclopropylamine; Nevirapine; Moxifloxacin hydrochloride; Validation; Stress conditions Ion chromatography; Cyclopropylamine; Nevirapine; Moxifloxacin hydrochloride; Validation; Stress conditions
MDPI and ACS Style

KOTHAPALLI, P.K.S.R.; KHAGGA, M.; MEKALA, N.R.; SIGAMANI, J.P.; VUNDAVILLI, J.K.; MASANI, N.K.; SHARMA, H.K. Simple and Sensitive Stability-Indicating Ion Chromatography Method for the Determination of Cyclopropylamine in Nevirapine and Moxifloxacin Hydrochloride Drug Substances. Sci. Pharm. 2012, 80, 77-88.

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