Development and Validation of Lc-ms/ms Method for the Estimation of Zaltoprofen Enantiomers in Pharmaceutical Formulation

A simple, fast, specific and precise LC-MS/MS method was developed and validated for the determination of zaltoprofen enantiomers in pharmaceutical formulation. The interface used was Atmospheric Pressure Chemical Ionisation Technique. Analysis was performed using a ACI cellu 1 column (150 x 4.6 mm I.D., particle size 5 μ) by isocratic elution with 0.1% Ammonia solution: Acetonitrile (10: 90 v/v) and flow rate was 0.5 ml/min. The calibration plot was linear over the range of 18-54 ng/ml of S-zaltoprofen and 22-66 ng/ml of R-zaltoprofen with a correlation coefficient of 0.999 for S and R zaltoprofen. This optimized mobile phase separated S-zaltoprofen at 2.4 min and Rzaltoprofen at 3.9 min respectively. The proposed LC-MS/MS method is suitable for analysis of zaltoprofen enantiomers in pharmaceutical formulations and quality control analysis.