Chemical Name: (3S,8S,9S,12S)-3,12-Bis(1,1-dimethylethyl)-8-hydroxy-4,11-dioxo-9-(phenylmethyl)-6-[[4-(2-pyridinyl)phenyl]methyl]-2,5,6,10,13-pentaazatetradecanedioic acid dimethyl ester, sulfate (1:1) CAS Num: 229975-97-7 198904-31-3 (free base) Molecular formula: C38H52N6O7.H2SO4 Molecular weight: 802.9342 Quality Standard: The content of HPLC is above 98.5%. Application: Antiviral Drug