Sep 06, 2019· DESCRIPTION. SOVALDI (sofosbuvir) is a nucleotide analog inhibitor of HCV NS5B polymerase.. The IUPAC name for sofosbuvir is (S)-Isopropyl 2-((S)-(((2R,3R,4R,5R)-5-(2,4-dioxo3,4- dihydropyrimidin-1(2H)-yl)-4-fluoro-3-hydroxy-4-methyltetrahydrofuran-2yl) methoxy)-(phenoxy)phosphorylamino)propanoate.It has a molecular formula of C 22 H 29 FN 3 O 9 P and a …