33718-79-5 9-Ethyl-3,3'-dimethyl-5,5'-diphenyloxacarbocyanine, methylsulfate Benzoxazolium, 3-methyl-2-(2-((3-methyl-5-phenyl-2(3H)-benzoxazolylidene)methyl)-1-butenyl)-5-phenyl-, methyl sulfate EINECS 251-653-5 Methyl 3-methyl-2-(2-((3-methyl-5-phenyl-3H-benzoxazol-2-ylidene)methyl)but-1-enyl)-5-phenylbenzoxazolium sulphate