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Record Information
StatusExpected but not Quantified
Creation Date2012-09-06 15:16:50 UTC
Update Date2020-02-26 21:40:23 UTC
Secondary Accession Numbers
  • HMDB14815
Metabolite Identification
Common NameIsoflurophate
DescriptionIsoflurophate, also known as DFP or neoglaucit, belongs to the class of organic compounds known as phosphate esters. These are organic compounds containing phosphoric acid ester functional group, with the general structure R1P(=O)(R2)OR3. R1,R2 = O,N, or halogen atom; R3 = organyl group. It combines with the amino acid serine at the active site of the enzyme acetylcholinesterase, an enzyme that deactivates the neurotransmitter acetylcholine. Isoflurophate is a drug. Isoflurophate is an extremely weak basic (essentially neutral) compound (based on its pKa). It is a useful additive for protein or cell isolation procedure. DIPF is a diagnostic test for the presence of the active site Ser in serine proteases. It is stable, but undergoes hydrolysis when subjected to moisture, producing hydrofluoric acid. Another homologue of this series of esters, Diisopropyl fluorophosphate, was developed by British scientist Bernard Charles Saunders. Diisopropyl fluorophosphate is used in civilian laboratories to mimic lethal nerve gas exposure or organophosphate toxicities.
Diisopropoxyphosphoryl fluorideChEBI
Diisopropyl fluorophosphonateChEBI
Diisopropyl phosphofluoridateChEBI
Diisopropyl phosphorofluoridateChEBI
Diisopropylfluorophosphoric acid esterChEBI
Fluorodiisopropyl phosphateChEBI
Isopropyl fluophosphateChEBI
Isopropyl phosphorofluoridateChEBI
O,O'-diisopropyl phosphoryl fluorideChEBI
Diisopropyl fluorophosphateKegg
Diisopropyl fluorophosphonic acidGenerator
Diisopropyl phosphofluoridic acidGenerator
Diisopropyl phosphorofluoridic acidGenerator
Diisopropylfluorophosphoric acidGenerator
Diisopropylfluorophosphate esterGenerator
Diisopropylphosphorofluoridic acidGenerator
Fluorodiisopropyl phosphoric acidGenerator
Isofluorphic acidGenerator
Isoflurophosphoric acidGenerator
Isopropyl fluophosphoric acidGenerator
Isopropyl phosphorofluoridic acidGenerator
Diisopropyl fluorophosphoric acidGenerator
Isoflurophic acidGenerator
Di isopropylphosphorofluoridateHMDB
Merck brand OF isoflurophateHMDB
Bis(1-methylethyl) phosphorofluoridateHMDB
Chemical FormulaC6H14FO3P
Average Molecular Weight184.1457
Monoisotopic Molecular Weight184.066459031
IUPAC Namebis(propan-2-yl) fluorophosphonate
Traditional Nameisoflurophate
CAS Registry Number55-91-4
InChI Identifier
Chemical Taxonomy
Description belongs to the class of organic compounds known as phosphate esters. These are organic compounds containing phosphoric acid ester functional group, with the general structure R1P(=O)(R2)OR3. R1,R2 = O,N, or halogen atom; R3 = organyl group.
KingdomOrganic compounds
Super ClassOrganic acids and derivatives
ClassOrganic phosphoric acids and derivatives
Sub ClassPhosphate esters
Direct ParentPhosphate esters
Alternative Parents
  • Phosphoric acid ester
  • Organic oxygen compound
  • Organic oxide
  • Hydrocarbon derivative
  • Organooxygen compound
  • Aliphatic acyclic compound
Molecular FrameworkAliphatic acyclic compounds
External Descriptors

Biological location:


Industrial application:

Physical Properties
Experimental Properties
Melting Point-82 °CNot Available
Boiling PointNot AvailableNot Available
Water Solubility6.78 g/LNot Available
LogP1.4Not Available
Predicted Properties
Water Solubility6.78 g/LALOGPS
pKa (Strongest Basic)-9.6ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count1ChemAxon
Hydrogen Donor Count0ChemAxon
Polar Surface Area35.53 ŲChemAxon
Rotatable Bond Count4ChemAxon
Refractivity40.89 m³·mol⁻¹ChemAxon
Polarizability16.75 ųChemAxon
Number of Rings0ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleNoChemAxon
Spectrum TypeDescriptionSplash KeyView
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, Positivesplash10-0006-5900000000-a89a631cb99168cf7ba0Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-0udi-0900000000-5e57a55b5606aff19a9dSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-0udi-0900000000-f3d7a1b314068a05a458Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-0udi-4900000000-6b6d965cf006e47449f6Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-001i-0900000000-8dbbf0233439055f133aSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-0759-1900000000-7937b3536f2dc54c0c29Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-000t-9200000000-1d33f0f21ddbdd2b7c0fSpectrum
Biological Properties
Cellular Locations
  • Cytoplasm
Biospecimen Locations
  • Blood
  • Urine
Tissue LocationsNot Available
Normal Concentrations
BloodExpected but not Quantified Not AvailableNot AvailableTaking drug identified by DrugBank entry DB00677 details
UrineExpected but not Quantified Not AvailableNot AvailableTaking drug identified by DrugBank entry DB00677 details
Abnormal Concentrations
Not Available
Associated Disorders and Diseases
Disease ReferencesNone
Associated OMIM IDsNone
DrugBank IDDB00677
Phenol Explorer Compound IDNot Available
FooDB IDNot Available
KNApSAcK IDNot Available
Chemspider ID5723
KEGG Compound IDC00202
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkIsoflurophate
METLIN IDNot Available
PubChem Compound5936
PDB IDNot Available
ChEBI ID17941
Food Biomarker OntologyNot Available
VMH IDNot Available
Synthesis ReferenceNot Available
Material Safety Data Sheet (MSDS)Not Available
General ReferencesNot Available


General function:
Involved in carboxylesterase activity
Specific function:
Terminates signal transduction at the neuromuscular junction by rapid hydrolysis of the acetylcholine released into the synaptic cleft. Role in neuronal apoptosis.
Gene Name:
Uniprot ID:
Molecular weight:
  1. Malatova Z, Gottlieb M, Marsala J: Depression of acetylcholinesterase synthesis following transient cerebral ischemia in rat: pharmacohistochemical and biochemical investigation. Gen Physiol Biophys. 1999 Mar;18(1):57-71. [PubMed:10378121 ]
  2. Quistad GB, Zhang N, Sparks SE, Casida JE: Phosphoacetylcholinesterase: toxicity of phosphorus oxychloride to mammals and insects that can be attributed to selective phosphorylation of acetylcholinesterase by phosphorodichloridic acid. Chem Res Toxicol. 2000 Jul;13(7):652-7. [PubMed:10898598 ]
  3. da Costa VL Jr, Lapa AJ, Godinho RO: Short- and long-term influences of calcitonin gene-related peptide on the synthesis of acetylcholinesterase in mammalian myotubes. Br J Pharmacol. 2001 May;133(2):229-36. [PubMed:11350858 ]
  4. Pang YP, Kollmeyer TM, Hong F, Lee JC, Hammond PI, Haugabouk SP, Brimijoin S: Rational design of alkylene-linked bis-pyridiniumaldoximes as improved acetylcholinesterase reactivators. Chem Biol. 2003 Jun;10(6):491-502. [PubMed:12837382 ]
  5. Ashani Y, Gentry MK, Doctor BP: Differences in conformational stability between native and phosphorylated acetylcholinesterase as evidenced by a monoclonal antibody. Biochemistry. 1990 Mar 13;29(10):2456-63. [PubMed:1692236 ]
  6. Chen X, Ji ZL, Chen YZ: TTD: Therapeutic Target Database. Nucleic Acids Res. 2002 Jan 1;30(1):412-5. [PubMed:11752352 ]
General function:
Involved in carboxylesterase activity
Specific function:
Esterase with broad substrate specificity. Contributes to the inactivation of the neurotransmitter acetylcholine. Can degrade neurotoxic organophosphate esters.
Gene Name:
Uniprot ID:
Molecular weight:
  1. Kamata R, Saito S, Suzuki T, Takewaki T, Kobayashi H: Correlation of binding sites for diisopropyl phosphorofluoridate with cholinesterase and neuropathy target esterase in membrane and cytosol preparations from hen. Neurotoxicology. 2001 Apr;22(2):203-14. [PubMed:11405252 ]
  2. Acey RA, Bailey S, Healy P, Jo C, Unger TF, Hudson RA: A butyrylcholinesterase in the early development of the brine shrimp (Artemia salina) larvae: a target for phthalate ester embryotoxicity? Biochem Biophys Res Commun. 2002 Dec 13;299(4):659-62. [PubMed:12459190 ]
  3. Pittel Z, Cohen S, Fisher A, Heldman E: Differential long-term effect of AF64A on [3H]ACh synthesis and release in rat hippocampal synaptosomes. Brain Res. 1992 Jul 17;586(1):148-51. [PubMed:1511344 ]
  4. Miller RB, Blank CL: Determination of serum cholinesterase activity by liquid chromatography with electrochemical detection. Anal Biochem. 1991 Aug 1;196(2):377-84. [PubMed:1776688 ]
  5. Kelly SS, Ferry CB, Bamforth JP: The effects of anticholinesterases on the latencies of action potentials in mouse skeletal muscles. Br J Pharmacol. 1990 Apr;99(4):721-6. [PubMed:2361169 ]
  6. Masson P, Fortier PL, Albaret C, Froment MT, Bartels CF, Lockridge O: Aging of di-isopropyl-phosphorylated human butyrylcholinesterase. Biochem J. 1997 Oct 15;327 ( Pt 2):601-7. [PubMed:9359435 ]