4-hydroxy-6,7-dihydro-5H-cyclopenta[b]pyran-2-one

N,N'-二丁基-N,N'-二甲基丙二酰胺

6-hydroxy-2-(4-nitrophenyl)-1,3-thiazin-4-one

dihexadecyl propanedioate

3-oxo-3-phenylsulfanylpropanoic acid