1,5,5-trimethyl-3-propan-2-ylidenecyclohexene

(1α,2β,5β,6α)-9,9-Dimethyl-7,8-diazatricyclo(4.3.0.02,5)nona-3,7-dien

二丙酮腙

α-hydroxyisobutyranilide

α-ethoxyisobutyranilide