1,3-Diethyl-2-methyl-1H-imidazo(4,5-b)quinoxalinium toluene-p-sulphonate 1H-Imidazo(4,5-b)quinoxalinium, 1,3-diethyl-2-methyl-, salt with 4-methylbenzenesulfonic acid (1:1) 41450-78-6 EINECS 255-370-8