ethyl 3-chlorobut-3-enoate

2,3-丁二烯酸乙酯

2-[(4,4-dimethyl-2,6-dioxocyclohexyl)-phenylmethyl]-5,5-dimethylcyclohexane-1,3-dione

2,4,6-trimethyl-1,3,5-triazine

2-氨基-4,6-二甲基-1,3,5-三嗪