1H-Benz(e)indolium, 2-(2-(3-((1,3-dihydro-1,1-dimethyl-3-(3-sulfopropyl)-2H-benz(e)indol-2-ylidene)ethylidene)-2-(4-(ethoxycarbonyl)-1-piperazinyl)-1-cyclopenten-1-yl)ethenyl)-1,1-dimethyl-3-(3-sulfopropyl)-, hydroxide, inner salt, compd. with N,N-diethylethanamine (1:1) 1H-Benz(e)indolium, 2-(2-(3-((1,3-dihydro-1,1-dimethyl-3-(3-sulfopropyl)-2H-benz(e)indol-2-ylidene)ethylidene)-2-(4-(ethoxycarbonyl)-1-piperazinyl)-1-cyclopenten-1-yl)ethenyl)-1,1-dimethyl-3-(3-sulfopropyl)-, inner salt, compd. with N,N-diethylethanamine (1:1) 54849-69-3 55281-21-5 58984-24-0 90457-18-4 EINECS 259-375-6