1-Naphthalenesulfonic acid, 3,3'-[(3,3'-dimethyl[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[4-amino-, disodium salt 992-59-6 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 Calcomine Red 4BX Chrome Leather Red 4B Cotton Red 4B Diacotton Benzopurpurine 4B Diamine Purpurine 4B Diaphtamine Purpurine 4B Diazamine Purpurine 4B Diazine Red 4B Diazol Purpurine 4B Diphenyl Red 4B Diphenyl Red 4BS Direct Purpurine 4B Direct Purpurine M4B Direct Red 2 Direct Red 4A