Emtricitabine R-sulfoxide with CAS No: 2101981-64-8 is an impurity standard of Emtricitabine. Emtricitabine is a medication used for the treatment and prevention of HIV infection. Emtricitabine is taken orally as part of combination therapy for HIV treatment and as pre-exposure prophylaxis (PrEP) to reduce the risk of HIV transmission.Emtricitabine is works by inhibiting the replication of the virus. Buy high quality Emtricitabine R-sulfoxide from Molsyns Research. Molsyns Research is one of the leading manufacturer and exporter of Emtricitabine R-sulfoxide