Trexyl

https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:9453
http://www.hmdb.ca/metabolites/HMDB0014486
http://www.genome.jp/dbget-bin/www_bget?drug:D00521
http://www.genome.jp/dbget-bin/www_bget?cpd:C07463
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=5405
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?sid=46507007
https://www.chemspider.com/Chemical-Structure.5212.html
http://www.bindingdb.org/bind/chemsearch/marvin/MolStructure.jsp?monomerid=50017376
https://mor.nlm.nih.gov/RxNav/search?searchBy=RXCUI&searchTerm=42330
https://www.ebi.ac.uk/chebi/searchId.do?chebiId=9453
https://www.ebi.ac.uk/chembldb/index.php/compound/inspect/CHEMBL17157
http://bidd.nus.edu.sg/group/cjttd/ZFTTDDRUG.asp?ID=DAP000102
http://www.pharmgkb.org/drug/PA451619
http://www.guidetopharmacology.org/GRAC/LigandDisplayForward?ligandId=2608
http://www.rxlist.com/cgi/generic/terfen.htm
https://www.drugs.com/mtm/terfenadine.html
https://en.wikipedia.org/wiki/Terfenadine