N-甲基哌嗪

左旋氧氟沙星羧酸

1-methylpiperazine hydrochloride

6,8-二氟-1,4-二氢-1-[(1S)-2-羟基-1-甲基乙基]-7-(4-甲基-1-哌嗪基)-4-氧代-3-喹啉羧酸

(S)-ethyl 6,8-difluoro-1-(1-hydroxypropan-2-yl)-7-(4-methylpiperazin-1-yl)-4-oxo-1,4-dihydroquinoline-3-carboxylate