diethyl 2,7-dibutyl-2,7-dichloro-4-methyloct-4-enedioate

diethyl 2,4,5,7-tetrachloro-2,7-diethyloct-4-enedioate

ethyl N-(1-diethoxyphosphorylethenyl)carbamate

6-甲基-3-庚酮

乙胩