1-Naphthalenesulfonic acid, 3,3'-((3,3'-dimethyl(1,1'-biphenyl)-4,4'-diyl)bis(azo))bis(4-amino-, disodium salt 1-Naphthalenesulfonic acid, 3,3'-((3,3'-dimethyl(1,1'-diphenyl)-4,4'-diyl)bis(azo))bis(4-amino-, disodium salt 179472-45-8 70248-71-4 992-59-6 AI3-62957 Amanil purpurine Amanil purpurine 4B Atul Direct Red 4B Azamin 4B Azocard Red 4B Bencidal purple 4B Benzanil purpurine 4B Benzopurpurin 4B Benzopurpurine 4B Benzopurpurine 4BKX Benzopurpurine 4BX Brasilamina Red 4B C.I. 23500 C.I. Direct Red 2 C.I. Direct Red 2 disodium salt C.I. Direct Red 2, disodium salt (8CI) CCRIS 690 Calcomine Red 4BX Cerven prima 2 [Czech] Chrome Leather Red 4B Cotton Red 4B DIRECT RED 2 Diacotton benzopurpurine 4B Diamine purpurine 4B Diaphtamine Purpurine 4B Diaphtamine purpurine Diazamine purpurine 4B Diazine Red