AJACAmerican Journal of Analytical Chemistry2156-8251Scientific Research Publishing10.4236/ajac.2014.52012AJAC-42152ArticlesChemistry&Materials Science Spectrophotometric Determination of Etravirine in Bulk and Pharmaceutical Formulations .Murali1*S.V. Venkatrao1C.Rambabu1Department of Chemistry, Acharya Nagarjuna University, Guntur, India* E-mail:murali.dadi@gmail.com(.M);1701201405027782October 25, 2012November 26, 2012 December 3, 2012© Copyright 2014 by authors and Scientific Research Publishing Inc. 2014This work is licensed under the Creative Commons Attribution International License (CC BY). http://creativecommons.org/licenses/by/4.0/

Two simple, rapid, sensitive, accurate, precise and economical Visible Spectrophotometric methods have been developed for the determination of Etravirine in pure and pharmaceutical formulations. These methods (A and B) were based on nucleophilic substitution and oxidative coupling reactions of Etravirine by 1,2-naphtha quinone-4-sulphonate (NQS) in alkaline medium and 3-methyl-2-benzothiazolinone hydrazone (MBTH) in acidic medium with the maximum absorbance at 414 nm and 635 nm respectively. Linearity was obtained in the concentration range of 5 -30 μg/ml and 2 -10 μg/ml which was corroborated by the correlation coefficient (r) values of 0.9995 and 0.9996 respectively. The methods developed were validated with respect to linearity, accuracy (recovery), precision, Sandell’s sensitivity, molar extinction coefficient and specificity. The proposed methods are successfully applied for the determination of Etravirine in bulk and pharmaceutical formulations and results were validated statistically by recovery studies.

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