3-?Carboxy-?4-?chloro-benzenediazonium Chloride is an intermediate in synthesizing 4-Dehydroxy-4-chloro Olsalazine (D229830), an impurity of Olsalazine sodium salt (O586000). Olsalazine Sodium Salt is a dimer of Mesalazine (M258100), an anti-inflammatory drug used in the treatment of inflammatory bowel disease and ulcerative colitis.
