3-((1,3-Dihydro-1,3,3-trimethyl-2H-indol-2-ylidene)ethylidene)-9-ethyl-3H-carbazolium dihydrogen phosphate 3H-Carbazolium, 3-((1,3-dihydro-1,3,3-trimethyl-2H-indol-2-ylidene)ethylidene)-9-ethyl-, phosphate (1:1) 83950-25-8 EINECS 281-476-9