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UV Spectrophotometric Method for the Estimation of Roflumilast in Human Serum
Raveendra BG, Kiran SSB, Kumari VM, Jyothi RK and Bhavani DM
Ultra violet spectrophotometric method for the estimation roflumilast in spiked human serium. The present study was spectrophotometric estimation of roflumilast in spiked human serum is based on measurement at the maximum wavelength 248 nm using 0.2M Hcl as a solvent. The roflumilast stock solution was prepared with distilled water to produse calibration curve. The standard solution of roflumilast shows absorption maxima at 248 nm. The roflumilast obeyed beer lamberts law in the concentration range of 40-88μg/ml with regression 0.9987 at 248nm. The overall percentage recovery of roflumilast was found to be 99.52% which reflects that the method was free from the interference. The % RSD values of intra day and inter day precision was found to be 0.031 and 0. 046% respectively, which is less than 2 and hence this method is precise. The values of LOD and LOQ were found to be 0.783 and 2.375 μg/ml, respectively and it indicates this method was sensitive.