1,2-Ethane disulfonic acid, compd. with 4,5,6,7-tetrahydrobenzothiazole (1:2) 31784-85-7 4,5,6,7-Tetrahydrobenzothiazole 1,2-ethanedisulfonate (2:1) 4,5-Tetramethylenethiazole 1,2-ethanedisulfonate (2:1) Benzothiazole, 4,5,6,7-tetrahydro-, 1,2-ethanedisulfonate (2:1)