1,2,3,3a-Tetrahydro-3a,9-dimethylpyrrolo(2,1-b)benzothiazolium chloride 34250-53-8 3a,9-Dimethyl-1,2,3,3a-tetrahydropyrrolo(2,1-b)benzothiazolium chloride Pyrrolo(2,1-b)benzothiazolium, 1,2,3,3a-tetrahydro-3a,9-dimethyl-, chloride