Synonyms: Spiro(cyclohexane-1,2'-(1,3)dioxolo(4,5-f)benzothiazolium), 6'-methyl-7'-(3-sulfopropyl)-, inner salt;Spiro(cyclohexane-1,2'-(1,3)dioxolo(4,5-f)benzothiazolium), 6'-methyl-7'-(3-sulfopropyl)-, hydroxide, inner salt;6'-Methyl-7'-(3-sulphonatopropyl)spiro(cyclohexane-1,2'-(1,3)dioxolo(4,5-f)benzothiazolium);3-(6'-methylspiro[cyclohexane-1,2'-[1,3]dioxolo[4,5-f][1,3]benzothiazol[7]ium]-7'-yl)propane-1-sulfonate