NiQuitin

http://classyfire.wishartlab.com/tax_nodes/C0000000
http://classyfire.wishartlab.com/tax_nodes/C0000002
http://classyfire.wishartlab.com/tax_nodes/C0000089
http://classyfire.wishartlab.com/tax_nodes/C0001975
http://classyfire.wishartlab.com/tax_nodes/C0001975
http://classyfire.wishartlab.com/tax_nodes/C0000279
http://classyfire.wishartlab.com/tax_nodes/C0003899
http://classyfire.wishartlab.com/tax_nodes/C0003449
http://classyfire.wishartlab.com/tax_nodes/C0004144
http://classyfire.wishartlab.com/tax_nodes/C0002239
http://classyfire.wishartlab.com/tax_nodes/C0004139
http://classyfire.wishartlab.com/tax_nodes/C0004557
http://classyfire.wishartlab.com/tax_nodes/C0004150
https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:17688
http://www.genome.jp/dbget-bin/www_bget?cpd:C00745
http://www.hmdb.ca/metabolites/HMDB0001934
http://www.genome.jp/dbget-bin/www_bget?drug:D03365
http://www.genome.jp/dbget-bin/www_bget?cpd:C00745
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=89594
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?sid=46506924
https://www.chemspider.com/Chemical-Structure.80863.html
http://www.bindingdb.org/bind/chemsearch/marvin/MolStructure.jsp?monomerid=82070
https://mor.nlm.nih.gov/RxNav/search?searchBy=RXCUI&searchTerm=31765
https://www.ebi.ac.uk/chebi/searchId.do?chebiId=17688
https://www.ebi.ac.uk/chembldb/index.php/compound/inspect/CHEMBL3
https://zinc.docking.org/substances/ZINC000000391812
http://bidd.nus.edu.sg/group/cjttd/ZFTTDDRUG.asp?ID=DAP000175
http://www.pharmgkb.org/drug/PA450626
https://www.ebi.ac.uk/pdbe-srv/pdbechem/chemicalCompound/show/NCT
http://www.rxlist.com/cgi/generic2/nicotini.htm
https://www.drugs.com/nicotine.html
http://www.pdrhealth.com/drug_info/rxdrugprofiles/drugs/nic1292.shtml
https://en.wikipedia.org/wiki/Nicotine