Synonyms: Naphtho(2,3-d)thiazolium, 2-(2-(2-(diphenylamino)-3-(2-(3-(4-methoxy-4-oxobutyl)naphtho(2,3-d)thiazol-2(3H)-ylidene)ethylidene)-1-cyclopenten-1-yl)ethenyl)-3-(4-methoxy-4-oxobutyl)-, perchlorate (1:1);2-(2-(2-(Diphenylamino)-3-((3-(4-methoxy-4-oxobutyl)naphtho(d)thiazol-2(3H)-ylidene)ethylidene)-1-cyclopenten-1-yl)vinyl)-3-(4-methoxy-4-oxobutyl)naphtho(2,3-d)thiazolium perchlorate;Naphtho(2,3-d)thiazolium, 2-(2-(2-(diphenylamino)-3-((3-(4-methoxy-4-oxobutyl)naphtho(2,3-d)thiazol-2(3H)-ylidene)ethylidene)-1-cyclopenten-1-yl)ethenyl)-3-(4-methoxy-4-oxobutyl)-, perchlorate;2-{(E)-2-[(3E)-2-(diphenylamino)-3-{(2E)-2-[3-(4-methoxy-4-oxobutyl)naphtho[2,3-d][1,3]thiazol-2(3H)-ylidene]ethylidene}cyclopent-1-en-1-yl]ethenyl}-3-(4-methoxy-4-oxobutyl)naphtho[2,3-d][1,3]thiazol-3-ium perchlorate