Cytorx

https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:5100
http://www.hmdb.ca/metabolites/HMDB0015231
http://www.genome.jp/dbget-bin/www_bget?drug:D00323
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=3366
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?sid=46504735
https://www.chemspider.com/Chemical-Structure.3249.html
http://www.bindingdb.org/bind/chemsearch/marvin/MolStructure.jsp?monomerid=50248003
https://mor.nlm.nih.gov/RxNav/search?searchBy=RXCUI&searchTerm=4451
https://www.ebi.ac.uk/chebi/searchId.do?chebiId=5100
https://www.ebi.ac.uk/chembldb/index.php/compound/inspect/CHEMBL1463
https://zinc.docking.org/substances/ZINC000000896546
http://bidd.nus.edu.sg/group/cjttd/ZFTTDDRUG.asp?ID=DAP001542
http://www.pharmgkb.org/drug/PA449654
https://www.ebi.ac.uk/pdbe-srv/pdbechem/chemicalCompound/show/1LD
http://www.rxlist.com/cgi/generic3/flucytosine.htm
https://www.drugs.com/cdi/flucytosine.html
https://en.wikipedia.org/wiki/Flucytosine