6-(ethyldisulfanyl)-7-methyl-8-(methylthio)pyrrolo[1,2-a]pyrazine

7-methyl-6 (or 8-)-methylthio-pyrrolo(1,2-a)pyrazine disulphide

1,2-dichloroethenylsulfanylbenzene

2-ethylsulfanyl-N,N-dimethylethanamine

3-(乙基硫代)丁酸乙酯