英文别名Entecavir EP Impurity E; 8-Methoxy Entecavir; 8-Methoxyl entecavir; 6H-Purin-6-one, 2-amino-1,9-dihydro-9-[(1R,3S,4R)-4-hydroxy-3-(hydroxymethyl)-2-methylenecyclopentyl]-8-methoxy-, rel-; 2-amino-9-((1S,3R,4S)-4-hydroxy-3-(hydroxymethyl)-2-methylenecyclopentyl)-8-methoxy-1,9-dihydro-6H-purin-6-one; 2-amino-9-((1R,3S,4R)-4-hydroxy-3-(hydroxymethyl)-2-methylenecyclopentyl)-8-methoxy-1,9-dihydro-6H-purin-6-one; 2-Amino-9-((1S,3R,4S)-4-hydroxy-3-(hydroxymethyl)-2-methylenecyclopentyl)-8-methoxy-3H-purin-6(9H)-one; 2-amino-9-[(1R,3S,4R)-4-hydroxy-3-(hydroxymethyl)-2-methylidenecyclopentyl]-8-methoxy-1H-purin-6-one 
