128956-57-0 1H-Imidazo(4,5-b)quinoxalinium, 2-(2-(2,5-dihydro-2-methyl-5-oxo-3-phenyl-4-isoxazolyl)ethenyl)-1,3-dimethyl-, salt with 4-methylbenzenesulfonic acid (1:1) 2-(2-(2,5-Dihydro-2-methyl-5-oxo-3-phenylisoxazol-4-yl)vinyl)-1,3-dimethyl-1H-imidazo(4,5-b)quinoxalinium toluene-p-sulphonate 65151-66-8 EINECS 265-545-0