3,5-二溴-2,6-二甲基-2,5-庚二烯-4-酮

(E), (Z) diethyl 2-ethylidene-3-methylglutarate

ethyl 3-(phenylazo)but-2-enoate

1,2,5,6-四溴己烷

2,3-dibromosuccinaldehyde