Synonyms: Thiazolium,2-[[4,5-diphenyl-3-(4-sulfobutyl)-2(3H)-thiazolylidene]methyl]-5-[(1-ethyl-4(1H)-quinolinylidene)ethylidene]-4,5-dihydro-4-oxo-3-(2-propenyl)-,hydroxide, inner salt; Thiazolium,2-[[4,5-diphenyl-3-(4-sulfobutyl)-2(3H)-thiazolylidene]methyl]-5-[(1-ethyl-4(1H)-quinolinylidene)ethylidene]-4,5-dihydro-4-oxo-3-(2-propenyl)-,inner salt (9CI)