Synonyms: EINECS 220-035-7;1,3-Benzenedisulfonic acid, 4-((2,7-dihydro-3-methyl-2,7-dioxo-3H-naphtho(1,2,3-de)quinolin-6-yl)amino)-, disodium salt;1,3-Benzenedisulfonic acid, 4-((2,7-dihydro-3-methyl-2,7-dioxo-3H-naphtho(1,2,3-de)quinolin-6-yl)amino)-, sodium salt (1:2);2611-80-5;Disodium 4-((2,7-dihydro-3-methyl-2,7-dioxo-3H-dibenz(f,ij)isoquinolin-6-yl)amino)-benzene-1,3-disulphonate