Serine

https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:17115
http://www.genome.jp/dbget-bin/www_bget?cpd:C00065
http://www.hmdb.ca/metabolites/HMDB0000187
http://www.genome.jp/dbget-bin/www_bget?drug:D00016
http://www.genome.jp/dbget-bin/www_bget?cpd:C00065
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=5951
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?sid=46506450
https://www.chemspider.com/Chemical-Structure.5736.html
http://www.bindingdb.org/bind/chemsearch/marvin/MolStructure.jsp?monomerid=50357212
https://mor.nlm.nih.gov/RxNav/search?searchBy=RXCUI&searchTerm=9671
https://www.ebi.ac.uk/chebi/searchId.do?chebiId=33384
https://www.ebi.ac.uk/chembldb/index.php/compound/inspect/CHEMBL11298
https://zinc.docking.org/substances/ZINC000000895034
http://www.pharmgkb.org/drug/PA451330
http://www.guidetopharmacology.org/GRAC/LigandDisplayForward?ligandId=726
https://www.ebi.ac.uk/pdbe-srv/pdbechem/chemicalCompound/show/SER
https://en.wikipedia.org/wiki/Serine