Synonyms: 1H-Naphth[1,2-d]imidazole-8-sulfonicacid,2-[3-[(2,4-dihydroxyphenyl)azo]phenyl]-7-[(2,5-dimethylphenyl)azo]-6-hydroxy-,monosodium salt (9CI); 1H-Naphth[1,2-d]imidazole-8-sulfonic acid,2-[m-[(2,4-dihydroxyphenyl)azo]phenyl]-6-hydroxy-7-(2,5-xylylazo)-, monosodiumsalt (8CI); Benzoform Scarlet B; C.I. 26575