Synonyms: calcium 4,4'-bis[[1-[[(2,4-dimethylphenyl)amino]carbonyl]-2-oxopropyl]azo][1,1'-biphenyl]-2,2'-disulphonate;4,4'-Bis[[1-(2,4-dimethylphenylcarbamoyl)-2-oxopropyl]azo]biphenyl-2,2'-disulfonic acid calcium salt;4,4'-Bis[[1-[[(2,4-dimethylphenyl)amino]carbonyl]-2-oxopropyl]azo][1,1'-biphenyl]-2,2'-disulfonic acid calcium salt;(1,1'-Biphenyl)-2,2'-disulfonic acid, 4,4'-bis((1-(((2,4-dimethylphenyl)amino)carbonyl)-2-oxopropyl)azo)-, calcium salt (1:1);Calcium 4,4'-bis((1-(((2,4-dimethylphenyl)amino)carbonyl)-2-oxopropyl)azo)(1,1'-biphenyl)-2,2'-disulphonate (1:1);Einecs 279-929-0