US National Cancer Institute

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. Direct Red 2

C.I. Direct Red 2 disodium salt

C.I. Direct Red 2, disodium salt (8CI)

C.I. 23500

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 M4B

Direct Purpurine 4B

Direct Red DCB

Direct Red 2

Direct Red 4A

Direct Red 4B

Ditolybis(azonaphthionic acid)

Eclipse Red

Erie Benzo 4BP

Erie Red 4B

Fast Scarlet

Hispamin Red 4B

Kayaku Benzopurpurine 4B

Mitsui Benzopurpurine 4BX

Paper Red 4BS

Phenamine Purpurine 4B

Purpurin 4B

Purpurine 4B

Tertrodirect Red 4B

1-Naphthalenesulfonic acid, 3,3'-[(3, 3'-dimethyl[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[4-amino-, disodium salt (9CI)

Unilever Center for Molecular Informatics, Cambridge University

Chemical Structures