Xanthotoxin

https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:18358
http://www.genome.jp/dbget-bin/www_bget?cpd:C01864
http://metacyc.org/META/new-image?type=COMPOUND&object=CPD-13042
http://www.hmdb.ca/metabolites/HMDB0014693
http://www.genome.jp/dbget-bin/www_bget?drug:D00139
http://www.genome.jp/dbget-bin/www_bget?cpd:C01864
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=4114
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?sid=46506275
https://www.chemspider.com/Chemical-Structure.3971.html
http://www.bindingdb.org/bind/chemsearch/marvin/MolStructure.jsp?monomerid=50041234
https://mor.nlm.nih.gov/RxNav/search?searchBy=RXCUI&searchTerm=6854
https://www.ebi.ac.uk/chebi/searchId.do?chebiId=18358
https://www.ebi.ac.uk/chembldb/index.php/compound/inspect/CHEMBL416
https://zinc.docking.org/substances/ZINC000002548959
http://bidd.nus.edu.sg/group/cjttd/ZFTTDDRUG.asp?ID=DAP000996
http://www.pharmgkb.org/drug/PA450433
https://www.ebi.ac.uk/pdbe-srv/pdbechem/chemicalCompound/show/8MO
http://www.rxlist.com/cgi/generic2/methox.htm
https://www.drugs.com/cdi/methoxsalen-hard-gelatin-capsules.html
https://en.wikipedia.org/wiki/Methoxsalen