Y. Krishna Reddy*, Kedhareshwari, Y. Harikha, V. Harikrishna, Muzahid, K. Gopi
Bomma Institute of Pharmacy, Khammam, Telangana, India
A B S T R A C T
The chromatographic conditions were successfully developed for the separation of Metformin and Gemigliptin by using RP-HPLC. The Phosphate buffer was pH 3.0 and the mobile phase was optimized with consists of Methanol: Phosphate buffer mixed in the ratio of 70:30 % v/ v. Inertsil C18 column C18 (4.6 x 150mm, 5mm) or equivalent chemically bonded to porous silica particles was used as stationary phase. The detection was carried out using UV detector at 260 nm. The solutions were chromatographed at a constant flow rate of 0.8 ml/min. the linearity range of metformin and gemigliptin were found to be from 100-500 mg/ml of metformin and 1-5mg/ml of gemigliptin. Linear regression coefficient was not more than 0.999. The values of % RSD are less than 2% indicating accuracy and precision of the method. The percentage recovery varies from 98-102% of metformin and gemigliptin. LOD and LOQ were found to be within limit. The results obtained on the validation parameters met ICH and USP requirements .it inferred the method found to be simple, accurate, precise and linear. The method was found to be having suitable application in routine laboratory analysis with high degree of accuracy and precision.
Keywords: Metformin, Gemigliptin, HPLC, LOD and LOQ