Retraction notice to “Colon-specific, mutual azo prodrug of 5-aminosalicylic acid with L-tryptophan: Synthesis, kinetic studies and evaluation of its mitigating effect in trinitrobenzenesulfonic acid-induced colitis in rats” [Bioorg. Med. Chem. 17 (2007) 15 (2007) 4903–4909] - Retraction Notice | RetractBase