Demetor

https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:6754
http://www.hmdb.ca/metabolites/HMDB0014597
http://www.genome.jp/dbget-bin/www_bget?drug:D08343
http://www.genome.jp/dbget-bin/www_bget?cpd:C07128
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=4058
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?sid=46506899
https://www.chemspider.com/Chemical-Structure.3918.html
http://www.bindingdb.org/bind/chemsearch/marvin/MolStructure.jsp?monomerid=50026752
https://mor.nlm.nih.gov/RxNav/search?searchBy=RXCUI&searchTerm=6754
https://www.ebi.ac.uk/chebi/searchId.do?chebiId=6754
https://www.ebi.ac.uk/chembldb/index.php/compound/inspect/CHEMBL607
https://zinc.docking.org/substances/ZINC000000001681
http://bidd.nus.edu.sg/group/cjttd/ZFTTDDRUG.asp?ID=DAP000230
http://www.pharmgkb.org/drug/PA450369
http://www.rxlist.com/cgi/generic/meper.htm
https://www.drugs.com/cdi/meperidine.html
https://en.wikipedia.org/wiki/Pethidine