Sofosbuvir O-Desisopropyl O-Desphenyl Impurity ;
(2S)-2-[[[(2R,3R,4R,5R)-5-(2,4-Dioxopyrimidin-1-yl)-4-fluoro-3-hydroxy-4-methyl-tetrahydrofuran-2-yl]methoxy-hydroxy-phosphoryl] amino] propanoic acid ammonium salt ;
CAS # 1233335-78-8 (acid) ;
C13H19FN3O9P (acid) ; MW: 411.28 ;
C13H22FN4O9P (ammonium salt) ; MW: 428.31 ;