1-Naphthalenesulfonic acid, 3,3'-[(3,3'-dimethyl[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[4-amino- 992-59-6 (DISODIUM SALT) AIDS-000587 AIDS000587 Azamin 4B Benzopurpurine 4B C.I. 23500 C.I. Direct Red 2 Cotton Red 4B Direct Red 4A Eclipse Red Erie Red 4B Fast Scarlet NSC5015 (DISODIUM SALT) Purpurin 4B Purpurine 4B