Synonyms: 1H-2-Benzothiopyran-4-carbonitrile, 3-amino-5,6,7,8-tetrahydro-1-thioxo-;1H-2-Benzothiopyran-4-carbonitrile, 5,6,7,8-tetrahydro-3-amino-1-thioxo-;1H-Benzo[c]thiopyran-4-carbonitrile, 5,6,7,8-tetrahydro-3-amino-1-thioxo-;3-amino-1-thioxo-5,6,7,8-tetrahydro-1H-2-benzothiopyran-4-carbonitrile;3-Amino-1-thioxo-5,6,7,8-tetrahydro-1H-isothiochromene-4-carbonitrile