The molecule is a guanidinium salt that is the bis[1,3-di(2-tolyl)guanidinium] salt of a copper phthalocyanine-disulfonic acid. A dye that is soluble in alcohols and phospholipids and is used to demonstrate myelin. It has a role as a fluorochrome and a histological dye. It is a guanidinium salt and an organosulfonate salt. It contains a Luxol fast blue MBS(2-).
[amino-(2-methylanilino)methylidene]-(2-methylphenyl)azanium;copper;2,11,20,29,38,40-hexaza-37,39-diazanidanonacyclo[28.6.1.13,10.112,19.121,28.04,9.013,18.022,27.031,36]tetraconta-1(36),2,4(9),5,7,10(40),11,13,15,17,19,21(38),22(27),23,25,28,30,32,34-nonadecaene-5,23-disulfonate