• PharmaTutor
    31 October 2011

    Development and Validation of HPTLC Method for Simultaneous Estimation of Atorvastatin Calcium and Olmesartan Medoxomil in Tablet Dosage Form

    About Author:
    D. J. Kalena*, C. N. Patel
    Department of Quality Assurance,
    Shri Sarvajanik Pharmacy College,
    Near arvind baug, Mehsana - 384 001, Gujarat, India

    A simple, precise, accurate and rapid high performance thin layer chromatographic method has been developed and validated for the simultaneous estimation of atorvastatin calcium and olmesartan medoxomil in combined dosage forms. The stationary phase used was TLC aluminium plate precoated with silica gel 60F254. The mobile phase used was a mixture of acetonitrile: chloroform: methanol: 10% glacial acetic acid (7: 2: 1.5: 0.1 v/v/v/v). The system was found to give compact spot for both atorvastatin and olmesartan (Rf value 0.5±0.01 and 0.76±0.02 respectively). The densitometric analysis of spot was carried out in reflectance mode at 253 nm. The method was validated in terms of linearity, specificity, precision, robustness and accuracy. The calibration curve was found to be linear in the range of 200 to 800 ng/spot for atorvastatin and 400 to 1600 ng/spot for olmesartan. The limit of detection and the limit of quantification for the atorvastatin were found to be 178.239 and 540.11 ng/spot and for olmesartan 40.10 and 121.51 ng/spot, respectively. The proposed method can be successfully used to determine the drug content of marketed tablet formulation.

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