Colorex

https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:267413
http://www.hmdb.ca/metabolites/HMDB0015149
http://www.genome.jp/dbget-bin/www_bget?drug:D07488
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=6335412
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?sid=46505592
https://www.chemspider.com/Chemical-Structure.10662422.html
https://mor.nlm.nih.gov/RxNav/search?searchBy=RXCUI&searchTerm=18747
https://www.ebi.ac.uk/chebi/searchId.do?chebiId=267413
https://www.ebi.ac.uk/chembldb/index.php/compound/inspect/CHEMBL1201346
https://zinc.docking.org/substances/ZINC000003952881
http://bidd.nus.edu.sg/group/cjttd/ZFTTDDRUG.asp?ID=DAP000733
http://www.pharmgkb.org/drug/PA448536
http://www.rxlist.com/cgi/generic2/balsalazide.htm
https://www.drugs.com/cdi/balsalazide.html
http://www.pdrhealth.com/drug_info/rxdrugprofiles/drugs/col1560.shtml
https://en.wikipedia.org/wiki/Balsalazide