2,7-Naphthalenedisulfonic acid,3,3'-((1-oxido-1,2-diazenediyl)bis((2-methoxy-4,1-phenylene)-2,1-diazenediyl))bis(4,5-dihydroxy-,lithium sodium salt (1:?:?), EINECS 285-749-3, 2,7-Naphthalenedisulfonic acid,3,3'-(azoxybis((2-methoxy-4,1-phenylene)azo))bis(4,5-dihydroxy-,lithium sodium salt, 3,3'-(Azoxybis((2-methoxy-p-phenylene)azo))bis(4,5-dihydroxynaphthalene-2,7-disulphonic) acid,lithium sodium salt,