8-Methyl-1,4-dioxa-8-azoniaspiro[4.5]decan

1-甲基-4-哌啶酮盐酸盐

1,4-二氧杂-8-氮杂螺[4.5]癸烷-8-羧酸乙酯

4-氯-4'-氟苯丁酮

对溴氟苯