Synonyms: trihydrogen bis[5-chloro-3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-2-hydroxybenzenesulphonato(3-)]chromate(3-), compound with N,N’-diphenylguanidine (1:3);[Chromate, bis[5-chloro-3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-2-hydroxybenzenesulfonato]]-, trihydrogen, compd. with [guanidine, N,N’-diphenyl-];[Chromate,bis[5-chloro-3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-2-hydroxybenzenesulfonato]]-,trihydrogen,compd. with [guanidine,N,N’-diphenyl-];Chromate, bis[5-chloro-3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-2-hydroxybenzenesulfonato]-, trihydrogen, compd. with N,N’-diphenylguanidine;Chromate,bis[5-chloro-3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-2-hydroxybenzenesulfonato]-,trihydrogen,compd. with N,N’-diphenylguanidine;Chromate(3-), bis[5-chloro-3-[(4,5-dihydro- 3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-2 -hydroxybenzenesulfonato(3-)]-, trihydrogen, compd. with N,N’-diphenylguanidine (1:3)