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Simple, precise and accurate area under curve spectroscopic method has been developed and validated for the estimation of Favipiravir in bulk and pharmaceutical dosage form. The drug shows maximum absorption (λ max) at 361nm in 0.1N NaOH solution and Area under Curve AUC in absorption spectra were measured between the wavelength range 356 to 366nm which obeys Beer’s law in the concentration range of 2-10µg/ml. The linearity study carried and regression coefficient was found to be 0.9982 and it has showed good linearity, precision during this concentration range. The % recovery was found to be 98.6-101.1. The LOD and LOQ were found to be 0.055 and 0.168µg/ml. The % relative standard deviation were found less than 2. According to ICH guidelines the method has been validated for linearity, precision, accuracy, robustness, ruggedness, LOD and LOQ. The developed and validated method can be successfully applied for reliable quantification of Favipiravir in bulk form and pharmaceutical dosage form.
Harshitha et al. (Sat,) studied this question.