6-环丙基-3-甲基-异噁唑并[5,4-b]吡啶-4-羧酸

ethyl 4-cyclopropyl-2,4-dioxobutanoate

ethyl 3-cyclopropylbut-2-enoate

3-cyclopropyl-but-2(Z)-enoic acid ethyl ester

2-戊醇