Methylene violet 3RAX4569-86-231 % similar 2-(2-Amino-3-methoxyphenyl)-4H-1-benzopyran-4-one167869-21-831 % similar N,N-Diethyl-m-toluidine91-67-831 % similar Beta-naphthoflavone6051-87-231 % similar 7-Hydroxyflavone6665-86-731 % similar Solvent yellow 562481-94-930 % similar 3-(Diethylamino)phenol91-68-930 % similar