Development of visible spectrophotometric methods for the analysis of favipiravir in pure drug and tablet formulation

Favipiravir is a synthetic prodrug, first discovered while assessing the antiviral activity of chemical agents active against influenza virus. The present study aimed at developing and validating new colorimetric methods for its determination in both pure form tablet formulation. developed method utilizes ion-pair spectrophotometry employed quantitative evaluation drug using acidic dyes - methyl orange (MO) red (MR) as ion-pairing agent. complex drugs with obeyed Beer’s law range 10 -50 µg/ml acceptable correlation coefficients. Recovery by was also good, relative standard deviation (%RSD) less than 2.5%. successfully applied to determine favipiravir formulation demonstrated be accurate, precise reproducible. It sufficiently sensitive specific bulk satisfactory results.