Determination of lincomycin hydrochloride in lincomycin cream by HPLC

Objective:To establish high performance liquid chromatography method for determination the content of lincomycin hydrochloride in lincomycin cream.Methods:A YMC C18（250 mm×4.6 mm,5μm）column was used with the mobile phase of 0.05mol/L borax （adjust pH to 6.0 with phosphoric acid）-methanol （55:45）and UV wavelengh of 214 nm.Results:The calibration curve of lincomycin hydrochloride was line in the range of 10～30μg（r=0.999 7）.The average recovery was 98.74%（RSD= 2.06%,n=9）.The relative content of lincomycin hydrochloride in three batch of lincomycin cream was 96.21%,96.50% and 93.38%.Conclusion:This method is simple,quick,accurate and suitable for the quality control of lincomyein cream.