RETRACTED: Synthesis, kinetic studies and pharmacological evaluation of mutual azo prodrug of 5-aminosalicylic acid for colon-specific drug delivery in inflammatory bowel disease

This article has been retracted at the request of the Editor-in-Chief and Author. Please see Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy).Reason: This is due to duplication of text by the same authors across several different papers. The authors acknowledge the need for originality and therefore retract this paper with the intention of re-writing the results in a different format.All of the Elsevier papers contained significant amounts of duplicate text from the paper in Indian J. Pharm. Sci., 68 (2006) 171–178 (Mutual azo prodrug of 5-aminosalicylic acid for colon targeted drug delivery: Synthesis, kinetic studies and pharmacological evaluation. Deepika Nagpal, R. Singh, Neha Gairola, S.L. Bodhankar, Suneela S. Dhaneshwar).The other Elsevier papers involved in this case are: (1) 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., 15(2007) 4903–4909, Suneela S. Dhaneshwar, Neha Gairola, Mini Kandpal, Gaurav Vadnerkar, Lokesh Bhatt; (2) Synthesis, kinetic studies and pharmacological evaluation of mutual azo prodrug of 5-aminosalicylic acid with d-phenylalanine for colon specific drug delivery in inflammatory bowel disease, Bioorg. Medi. Chem. Lett., 17 (2007) 1897–1902, Suneela S. Dhaneshwar, Neha Gairola, Mini Kandpal, Lokesh Bhatt, Gaurav Vadnerkar, S.S. Kadam.