4,5,6,7-四氢-1H-吲唑-3-羧肼

N,N'-二苄基草酰二胺

1-benzyl-3-benzylimino-1,3,4,5,6,7-hexahydro-indol-2-one

1-甲基-4,5,6,7-四氢-1H-吲唑-3-羧酸

2-环己酮甲酸乙酯