Abstract

Ibuprofen (IBU) is a non-steroidal anti-inflammatory drug that is extensively prescribed. For the determination of IBU in pharmaceutical formulations, a sensitive, simple, accurate, and rapid ultra-performance liquid chromatography method in combination with tandem triple quadruple mass spectrometry (UPLC-MS/MS) has been used and validated. The chromatographic separation was accomplished using a C18 UPLC column, 95 Å, 2.1 x 50 mm, 1.8 µm, and 0.1 percent formic acid in conjunction with acetonitrile (25:75 v/v. The flow rate was 0.15 ml min-1, with a run duration of 2.0 minutes. The injection volume was 5 μL and the column temperature was held constant at 40 °C.The mass transitions of İbuprofen and IS were m/z 205.1 → 159.0 and 249.9 → 229.1, respectivelty. According to ICH guidelines, the approach was thoroughly verified. The linear range 1-5000 ng mL-1 calibration curve has a strong correlation coefficient (0.9921). Within and between days precision were expressed as relative standard deviation and were lower than 6.24%. This method has been used to determine IBU in both pure form and pharmaceutical formulations with great success.

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