恩替卡韦EP杂质B恩替卡韦SSS
QY-ETKW-B
2-amino-9-((1S,3S,4S)-4-hydroxy-3-(hydroxymethyl)-2-methylenecyclopentyl)-1,9-dihydro-6H-purin-6-one
1367369-77-4
C12H15N5O3