英文名称:disodium 7-anilino-3-[[4-[(2,4-dimethyl-6-sulphonatophenyl)azo]-2,5-dimethylphenyl]azo]-4-hydroxynaphthalene-2-sulphonate; C.I. 27855; C.I. Direct Violet 7; C.I. Direct Violet 7, disodium salt (8CI); Direct Violet 7; (3E)-3-(2-{4-[(E)-(2,4-dimethyl-6-sulfophenyl)diazenyl]-2,5-dimethylphenyl}hydrazinylidene)-4-oxo-7-(phenylamino)-3,4-dihydronaphthalene-2-sulfonic acid