Favipiravir Impurity A with CAS No: 259793-88-9 is an impurity standard of Favipiravir. Favipiravir is an antiviral medication used to treat viral infections, particularly influenza and other RNA viruses.Favipiravir is interferes with the viruss ability to replicate by inhibiting an enzyme called RNA polymerase. Favipiravir is available in tablet form and taken orally. Buy high quality Favipiravir Impurity A from Molsyns Research. Molsyns Research is one of the leading manufacturer and exporter of Favipiravir Impurity A