3H-Carbazolium, 3-((1,3-dihydro-1,3,3-trimethyl-2H-indol-2-ylidene)ethylidene)-9-ethyl-, sulfate (2:1) 85283-93-8 Bis(3-((1,3-dihydro-1,3,3-trimethyl-2H-indol-2-ylidene)ethylidene)-9-ethyl-3H-carbazolium) sulphate EINECS 286-620-4