4-Pyridazinecarbonitrile, 2,3-dihydro-5,6-dimethyl-3-thioxo-
4-Pyridazinecarbonitrile, 3-mercapto-5,6-dimethyl-
2,3-Dihydro-5,6-dimethyl-3-thioxo-4-pyridazinecarbonitrile
5,6-Dimethyl-3-Thioxo-2,3-Dihydropyridazine-4-Carbonitrile
3-Mercapto-5,6-dimethylpyridazine-4-carbonitrile