Synonyms: 7'-Ethyl-6'-[2-[[7'-ethylspiro[cyclohexane-1,2'-[1,3]dioxolo[4,5-f]benzothiazol]-6(7H)-ylidene]methyl]-1-butenyl]spiro[cyclohexane-1,2'-[1,3]dioxolo[4,5-f]benzothiazolium]iodide (6CI); Spiro[cyclohexane-1,2'-[1,3]dioxolo[4,5-f]benzothiazolium],7'-ethyl-6'-[2-[(7'-ethylspiro[cyclohexane-1,2'-[1,3]dioxolo[4,5-f]benzothiazol]-6'(7'H)-ylidene)methyl]-1-butenyl]-,iodide (9CI)