Youshu

https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:10650
http://www.hmdb.ca/metabolites/HMDB0005037
http://www.genome.jp/dbget-bin/www_bget?drug:D00451
http://www.genome.jp/dbget-bin/www_bget?cpd:C07319
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=5358
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?sid=46506520
https://www.chemspider.com/Chemical-Structure.5165.html
http://www.bindingdb.org/bind/chemsearch/marvin/MolStructure.jsp?monomerid=50005835
https://mor.nlm.nih.gov/RxNav/search?searchBy=RXCUI&searchTerm=37418
https://www.ebi.ac.uk/chebi/searchId.do?chebiId=10650
https://www.ebi.ac.uk/chembldb/index.php/compound/inspect/CHEMBL128
https://zinc.docking.org/substances/ZINC000000014360
http://bidd.nus.edu.sg/group/cjttd/ZFTTDDRUG.asp?ID=DNC001649
http://www.pharmgkb.org/drug/PA451566
http://www.guidetopharmacology.org/GRAC/LigandDisplayForward?ligandId=119
http://www.rxlist.com/cgi/generic/sumitr.htm
https://www.drugs.com/cdi/sumatriptan.html
https://en.wikipedia.org/wiki/Sumatriptan