ABSTRACT
Objective:To establish an HPLC method for the content determination of gliquidone tablets to improve the specificity of the content determination and the rationality of the preparation of test solution. Methods: A UPLC-MS system was used to analyze the degradation products with positive and negative ion scanning and sub-ion scanning. An ACQUITY UPLC BEH C18 column(2. 1 mm × 50 mm,1. 7 μm) was employed with the mobile phase consisting of water (adjustting pH to 3. 5 with formic acid)-acetonitrile with gradient elution. The HPLC method was performed on an Agilent Zorbax SB-C18 column(150 mm × 4. 6 mm,5 μm). Water (adjusing pH to 3. 5 with formic acid)-acetonitrile(37. 5∶62. 5) was used as the mobile phase. The detection wavelength was set at 230 nm. The column temperature was set at 30℃. The flow rate was 1. 0 ml·min-1 with the injection volume of 20μl. Results:A good linear re-lationship was obtained within the range of 60. 200-140. 400μg·ml-1(r=0. 999 5), and the average recovery was 98. 60% with RSD of 0. 6% (n=9). Conclusion:The method is accurate, reliable, specific and reproducible, which can be used in the determination of content and content uniformity of gliquidone tablets.