Q

https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:15854
http://www.hmdb.ca/metabolites/HMDB0014611
http://www.genome.jp/dbget-bin/www_bget?cpd:C06526
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=3034034
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?sid=46507493
https://www.chemspider.com/Chemical-Structure.84989.html
http://www.bindingdb.org/bind/chemsearch/marvin/MolStructure.jsp?monomerid=50367247
https://mor.nlm.nih.gov/RxNav/search?searchBy=RXCUI&searchTerm=9071
https://www.ebi.ac.uk/chebi/searchId.do?chebiId=15854
https://www.ebi.ac.uk/chembldb/index.php/compound/inspect/CHEMBL170
https://zinc.docking.org/substances/ZINC000003831404
http://bidd.nus.edu.sg/group/cjttd/ZFTTDDRUG.asp?ID=DAP000491
http://www.pharmgkb.org/drug/PA451213
http://www.guidetopharmacology.org/GRAC/LigandDisplayForward?ligandId=2510
https://www.ebi.ac.uk/pdbe-srv/pdbechem/chemicalCompound/show/QI9
http://www.rxlist.com/cgi/generic3/quinine.htm
https://www.drugs.com/cdi/quinine.html
https://en.wikipedia.org/wiki/Quinine