2783-72-4 3,3'-Dimethylmonomethinethiacyanine iodide 3-Methyl-2-(3-methyl-2-benzothiazolinylidene)methylbenzothiazolium iodide BENZOTHIAZOLIUM, 3-METHYL-2-(3-METHYL-2-BENZOTHIAZOLINYLIDENE)METHYL-, IODIDE