1,4,7-三氧杂环十一烷-8,11-二酮

diethyl 2-bromobutanedioate

bis(2-piperidin-1-ylethyl) butanedioate

N,N'-bis(6-aminohexyl)butanediamide

1,4-di(imidazol-1-yl)butane-1,4-dione