12-氧代-5,8-二氧杂-2,11-二氮杂十五烷二酸 1-(9H-芴-9-基甲基)酯

4-oxo-4-(2,2,2-trichloroethoxy)butanoate

4-oxo-4-[1-(4-phenylphenyl)pentylamino]butanoic acid

4-O-(1-dimethoxyphosphorylethyl) 1-O-methyl butanedioate

4-O-(1-dimethoxyphosphorylbutyl) 1-O-methyl butanedioate