1,1',3,3,3',3'-Hexamethylindodicarbocyanine 1,1'-Hidc 36536-22-8 3H-Indolium, 2-(5-(1,3-dihydro-1,3,3-trimethyl-2H-indol-2-ylidene)-1,3-pentadienyl)-1,3,3-trimethyl- 48221-03-0