;9-(4-羟基-3-羟甲基-2-亚甲基环戊-1-基)鸟嘌呤; 英文名称： entecavir 英文别名： ;2-Amino-1,9-dihydro-9-[(1S,3R,4S)-4-hydroxy-3-(hydroxymethyl)-2-methylenecyclopentyl]-6H-purin-6-one;2-amino-9-[(1S,3R,4S)-4-hydroxy-3-(hydroxymethyl)-2-methylidenecyclopentyl]-3,9-dihydro-6H-purin-6-one;2-amino-9-[(3R,4S)-4-hydroxy-3-(hydroxymethyl)-2-methylidenecyclopentyl]-3,9-dihydro-6H-purin-6-one;2-amino-9-[(1S,3R,4S)-4-hydroxy-3-(hydroxymethyl)-2-methylidenecyclopentyl]-1,9-dihydro-6H-purin-6-onehydrate(1:1);entecavirBaraclude; 分子式： C12H15N5O3 分子量： 277.2792 InChI： InChI=1/C12H15N5O3/c1-5-6(3-18)8(19)2-7(5)17-4-14-9-10(17)15-12(13)16-11(9)20/h4,6-8,18-19H,1-3H2,(H3,13,15,16,20)/t6-,7-,8 /m0/s1