5-甲基-2-己烯

1-(diethoxyphosphorylmethyl)-4-methylsulfonylbenzene

1,4-dimethyl-1,4-diazoniabicyclo[2.2.2]octane,dibromide

ethyl 1-methyl-2-oxocyclopentane-1-carboxylate

N,N-二乙基-2-羟基-N-甲基-乙铵溴化物(1:1)