Synonyms: Benzenesulfonicacid, 2-chloro-4-[(2,7-dihydro-3-methyl-2,7-dioxo-3H-naphtho[1,2,3-de]quinolin-6-yl)amino]-,monosodium salt (9CI); Sulfanilic acid,2-chloro-N-(2,3-dihydro-3-methyl-2,7-dioxo-7H-naphtho[1,2,3-de]quinolin-6-yl)-,monosodium salt (8CI); 3H-Naphtho[1,2,3-de]quinoline, benzenesulfonic acidderiv.; Alizarine Rubinol 5G; C.I. 68220; C.I. Acid Red 83; Daiwa Red 10