diethyl (2-bromoethyl)(2-oxoethyl)propanedioate

diethyl (2-oxoethyl)<2-(phenylseleno)ethyl>propanedioate

diethyl 2-(2-bromoethyl)-2-(2-((2-phenylaziridin-1-yl)imino)ethyl)malonate

1,4-二氯丁烷

diethyl 2-(4-bromobutyl)propanedioate