甲硫醚

2,2-Dimercapto-aethen-1,1-dicarbonsaeure-aethylester-nitril

methyl 6-amino-2-(1-cyano-2-ethoxy-2-oxoethylidene)-4H-1,3-dithiine-5-carboxylate

三硫代碳酸二甲酯