Dimercaptomaleonitrile

1,2-Dicyano-1,2-ethenedithiol

2,3-Dimercapto-2-butenedinitrile

2,3-Bismercapto-2-butenedinitrile

2,3-Dimercapto-2-butene-1,4-dinitrile

1,2-Dimercapto-1,2-ethenedicarbonitrile