英文同义词: | 2-amino-9-((1R,3R,4R)-4-hydroxy-3-(hydroxymethyl)-2-
methylenecyclopentyl)-1,9-dihydro-6H-purin-6-one;Entecavir impurity 11/2-amino-9-((1R,3R,4R)-4-hydroxy-3-(hydroxymethyl)-2- methylenecyclopentyl)-1,9-dihydro-6H-purin-6-one;Entecavir Impurity 112;6H-Purin-6-one, 2-amino-1,9-dihydro-9-[(1R,3R,4R)-4-hydroxy-3-(hydroxymethyl)-2-methylenecyclopentyl]-, rel-;2-Amino-9-((1S,3S,4S)-4-hydroxy-3-(hydroxymethyl)-2-methylenecyclopentyl)-3,9-dihydro-6H-purin-6-one |