Synonyms: IR-144;.withn,n-diethylethanamine(1:1);1h-benz[e]indolium,2-[2-[3-[[1,3-dihydro-1,1-dimethyl-3-(3-sulfopropyl)-2h-ben;ten-1-yl]ethenyl]-1,1-dimethyl-3-(3-sulfopropyl)-,hydroxide,innersalt,compd;z[e]indol-2-ylidene]ethylidene]-2-[4-(ethoxycarbonyl)-1-piperazinyl]-1-cyclopen;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. w;IR-144,lasergrade(uv-vis);IR-144, 99%, LASER GRADE, PURE