2-amino-9-((1S,3R,4R)-4-hydroxy-3-(hydroxymethyl)-2-methylenecyclopentyl)-3H-purin-6(9H)-one;2-Amino-1,9-dihydro-9-[(1S,3R,4R)-4-hydroxy-3-(hydroxymethyl)-2-methylenecyclopentyl]-6H-purin-6-one; Entecavir Isomer 2;4’-epi-Entecavir
2-amino-9-((1S,3R,4R)-4-hydroxy-3-(hydroxymethyl)-2-methylenecyclopentyl)-3H-purin-6(9H)-one;2-Amino-1,9-dihydro-9-[(1S,3R,4R)-4-hydroxy-3-(hydroxymethyl)-2-methylenecyclopentyl]-6H-purin-6-one; Entecavir Isomer 2;4’-epi-Entecavir