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E-Journal of Chemistry
Volume 8 (2011), Issue 3, Pages 1238-1245

A Validated RP-HPLC Method for Simultaneous Estimation of Atenolol and Indapamide in Pharmaceutical Formulations

G. Tulja Rani,1 D. Gowri Sankar,2 P. Kadgapathi,3 and B. Satyanarayana4

1Department of Pharmaceutical Analysis, Sarojini Naidu Vanitha Pharmacy Maha Vidyalaya, Exhibition Grounds, Nampally, Hyderabad-500001, India
2Department of Pharmaceutical Analysis and Quality Assurance, University College of Pharmaceutical Sciences, Andhra University, Visakhapatnam-530003, India
3Hetero Drugs Ltd. , Balanagar, Hyderabad-500055, India
4Neosun Biotech (India) Pvt, Ltd., Hyderabad-500007, India

Received 19 September 2010; Accepted 22 November 2010

Copyright © 2011 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


A simple, fast, precise, selective and accurate RP-HPLC method was developed and validated for the simultaneous determination of atenolol and indapamide from bulk and formulations. Chromatographic separation was achieved isocratically on a Waters C18 column (250×4.6 mm, 5 µ particle size) using a mobile phase, methanol and water (adjusted to pH 2.7 with 1% orthophosphoric acid) in the ratio of 80:20. The flow rate was 1 mL/min and effluent was detected at 230 nm. The retention time of atenolol and indapamide were 1.766 min and 3.407 min. respectively. Linearity was observed in the concentration range of 12.5-150 µg/mL for atenolol and 0.625-7.5 µg/mL for indapamide. Percent recoveries obtained for both the drugs were 99.74-100.06% and 98.65-99.98% respectively. The method was validated according to the ICH guidelines with respect to specificity, linearity, accuracy, precision and robustness. The method developed can be used for the routine analysis of atenolol and indapamide from their combined dosage form.