乙酸对硝基亚苄基

1-(diethoxymethyl)-4-nitrobenzene

1-(1,3-dithian-2-ylidene)propan-2-one

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

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