Trimetrexate

http://www.hmdb.ca/metabolites/HMDB0015288
http://www.genome.jp/dbget-bin/www_bget?drug:D06238
http://www.genome.jp/dbget-bin/www_bget?cpd:C11154
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=5583
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?sid=46505247
https://www.chemspider.com/Chemical-Structure.5381.html
http://www.bindingdb.org/bind/chemsearch/marvin/MolStructure.jsp?monomerid=18268
https://mor.nlm.nih.gov/RxNav/search?searchBy=RXCUI&searchTerm=42333
https://www.ebi.ac.uk/chebi/searchId.do?chebiId=9737
https://www.ebi.ac.uk/chembldb/index.php/compound/inspect/CHEMBL119
https://zinc.docking.org/substances/ZINC000000598852
http://bidd.nus.edu.sg/group/cjttd/ZFTTDDRUG.asp?ID=DAP000635
http://www.pharmgkb.org/drug/PA451790
https://www.ebi.ac.uk/pdbe-srv/pdbechem/chemicalCompound/show/TMQ
http://www.rxlist.com/cgi/generic2/trimetrexate.htm
https://www.drugs.com/cdi/trimetrexate.html
https://en.wikipedia.org/wiki/Trimetrexate