The molecule is an organic sodium salt that is the disodium salt of 3,3'-azobis(6-hydroxybenzoic acid) (olsalazine). Effective in the treatment of inflammatory bowel disease and ulcerative colitis. Mechanism of action unknown, but appears to be topical It has a role as a non-steroidal anti-inflammatory drug and a prodrug. It contains an olsalazine(2-).
disodium;2-carboxy-4-[(3-carboxy-4-oxidophenyl)diazenyl]phenolate