2-(1,3-dithian-2-ylidene)-3-oxobutanoic acid

2,4-dichloro-3-(1,3-propylenedithio-methylene)-penta-1,4-diene

3-(1,3-二噻烷-2-亚基)-2,4-戊二酮

2-(二甲氧基甲基)呋喃