1742-90-1 Naphtho 1,2-d thiazolium, 3-methyl-2- 2- (3-methylnaphtho 1,2-d thiazolin-2-yli Naphtho(1,2-d)thiazolium, 1-methyl-2-(2-((1-methylnaphtho(1,2-d)thiazol-2(1H)-ylidene)methyl)-1-butenyl)-, chloride