Synonyms: TSN;3,7-DIAMINO-2(4),8-DIMETHYLDIBENZOTHIOPHENE 5,5-DIOXIDE;3,7 DIAMINO-2,8-DIMETHYL DIBENZOTHIOPHENE 5,5-DIOXIDE;3,7-DIAMINO-2,8-DIMETHYLDIBENZOTHIOPHENE SULFONE;3,7-DIAMINO-2,8-DIMETHYLDIPHENYLENESULFONE;3,7-Diamino-2,8-dimethyldibenzothiophene Sulfone (contains 2,6-Dimethyl isomer);