Record Information
Version 1.0
Update Date 1/22/2018 11:54:54 AM
Metabolite IDPAMDB120162
Identification
Name: 5-fluorocytosine
Description:An organofluorine compound that is cytosine that is substituted at position 5 by a fluorine. A prodrug for the antifungal 5-fluorouracil, it is used for the treatment of systemic fungal infections.
Structure
Thumb
Synonyms:
  • 5-FC
  • 5-Fluorocystosine
  • 5-Fluorocytosine
  • Ancobon (TN)
Chemical Formula: C4H4N3OF
Average Molecular Weight: 129.093
Monoisotopic Molecular Weight: 129.03384
InChI Key: XRECTZIEBJDKEO-UHFFFAOYSA-N
InChI:InChI=1S/C4H4FN3O/c5-2-1-7-4(9)8-3(2)6/h1H,(H3,6,7,8,9)
CAS number: 2022-85-7
IUPAC Name:4-amino-5-fluoropyrimidin-2(1H)-one
Traditional IUPAC Name: flucytosine
SMILES:C1(=C(F)C(N)=NC(=O)N1)
Chemical Taxonomy
Taxonomy DescriptionThis compound belongs to the class of organic compounds known as halopyrimidines. These are aromatic compounds containing a halogen atom linked to a pyrimidine ring. Pyrimidine is a 6-membered ring consisting of four carbon atoms and two nitrogen centers at the 1- and 3- ring positions.
Kingdom Organic compounds
Super ClassOrganoheterocyclic compounds
Class Diazines
Sub ClassPyrimidines and pyrimidine derivatives
Direct Parent Halopyrimidines
Alternative Parents
Substituents
  • Aminopyrimidine
  • Halopyrimidine
  • Pyrimidone
  • Aryl fluoride
  • Aryl halide
  • Hydropyrimidine
  • Heteroaromatic compound
  • Azacycle
  • Amine
  • Primary amine
  • Organooxygen compound
  • Organonitrogen compound
  • Organofluoride
  • Organohalogen compound
  • Hydrocarbon derivative
  • Organic oxide
  • Organopnictogen compound
  • Organic oxygen compound
  • Organic nitrogen compound
  • Aromatic heteromonocyclic compound
Molecular Framework Aromatic heteromonocyclic compounds
External Descriptors
Physical Properties
State: Solid
Charge:0
Melting point: 296 °C
Experimental Properties:
PropertyValueReference
Melting Point296 °CNot Available
Boiling PointNot AvailableNot Available
Water Solubility1.92e+00 g/LNot Available
LogP-1.1Not Available
Predicted Properties
PropertyValueSource
Water Solubility1.92 mg/mLALOGPS
logP-0.24ALOGPS
logP-0.95ChemAxon
logS-1.8ALOGPS
pKa (Strongest Acidic)8.16ChemAxon
pKa (Strongest Basic)1.06ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count3ChemAxon
Hydrogen Donor Count2ChemAxon
Polar Surface Area67.48 Å2ChemAxon
Rotatable Bond Count0ChemAxon
Refractivity38.22 m3·mol-1ChemAxon
Polarizability9.97 Å3ChemAxon
Number of Rings1ChemAxon
Bioavailability1ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Biological Properties
Cellular Locations: Not Available
Reactions:
Pathways: Not Available
Spectra
Spectra:
Spectrum TypeDescriptionSplash Key
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, PositiveNot Available
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, PositiveNot Available
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, PositiveNot Available
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, NegativeNot Available
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, NegativeNot Available
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, NegativeNot Available
References
References:
  • Einstein H (1973)Flucytosine, a major antifungal agent. California medicine 119, Pubmed: 18731030
  • Fothergill AW, Sanders C, Wiederhold NP (2013)Comparison of MICs of fluconazole and flucytosine when dissolved in dimethyl sulfoxide or water. Journal of clinical microbiology 51, Pubmed: 23576540
  • Markaki M, Craig RK, Savakis C (2004)Insect population control using female specific pro-drug activation. Insect biochemistry and molecular biology 34, Pubmed: 14871609
  • Abuhammour W, Habte-Gabr E (2001)Systemic antifungal agents. Indian journal of pediatrics 68, Pubmed: 11519290
  • Garcia H, Guitard J, Peltier J, Tligui M, Benbouzid S, Elhaj SA, Rondeau E, Hennequin C (2015)Caspofungin irrigation through percutaneous calicostomy catheter combined with oral flucytosine to treat fluconazole-resistant symptomatic candiduria. Journal de mycologie medicale 25, Pubmed: 25649231
  • Ellepola AN, Chandy R, Khan ZU (2015)In vitro postantifungal effect, adhesion traits and haemolysin production of Candida dubliniensis isolates following exposure to 5-fluorocytosine. Mycoses 58, Pubmed: 26201447
Synthesis Reference: Not Available
Material Safety Data Sheet (MSDS) Not Available
External Links:
ResourceLink
HMDBHMDB15231
DRUGBANKDB01099
CHEBI5100