Medchemexpress, HY-I0938 1mg Sofosbuvir impurity H CAS: Sofosbuvir impurity H, an diastereoisomer of sofosbuvir, is the impurity of sofosbuvir. Sofosbuvir (PSI-7977) is an inhibitor of HCV RNA replication, demonstrates potent anti-hepatitis C virus activity. Purity:>98% Medchemexpress has over 10000 novel life-science reagents, reference compounds, APIs and natural compounds for laboratory and scientific use. Other quantity can also be offered.