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Record Information
Version5.0
StatusDetected but not Quantified
Creation Date2021-09-11 12:28:19 UTC
Update Date2021-09-26 23:07:03 UTC
HMDB IDHMDB0253670
Secondary Accession NumbersNone
Metabolite Identification
Common NameIsophorone diisocyanate
DescriptionIsophorone diisocyanate, also known as IPDI, belongs to the class of organic compounds known as isocyanates. These are organic compounds containing the isocyanic acid tautomer, HN=C=O, of cyanic acid, HOC#N or its hydrocarbyl derivatives RN=C=O. Cyanide is an inhibitor of cytochrome c oxidase in the fourth complex of the electron transport chain (found in the membrane of the mitochondria of eukaryotic cells). Isophorone diisocyanate is an extremely weak basic (essentially neutral) compound (based on its pKa). Isophorone diisocyanate is a potentially toxic compound. As a result, the electron transport chain is disrupted and the cell can no longer aerobically produce ATP for energy. Cyanide is mainly metabolized into thiocyanate by either rhodanese or 3-mercaptopyruvate sulfur transferase. Cyanide poisoning is identified by rapid, deep breathing and shortness of breath, general weakness, giddiness, headaches, vertigo, confusion, convulsions/seizures and eventually loss of consciousness. Exposure to high levels of cyanide for a short time harms the brain and heart and can even cause coma, seizures, apnea, cardiac arrest and death. Tissues that mainly depend on aerobic respiration, such as the central nervous system and the heart, are particularly affected. Chronic inhalation of cyanide causes breathing difficulties, chest pain, vomiting, blood changes, headaches, and enlargement of the thyroid gland. Cyanide binds to the ferric ion of methemoglobin to form inactive cyanmethemoglobin. This compound has been identified in human blood as reported by (PMID: 31557052 ). Isophorone diisocyanate is not a naturally occurring metabolite and is only found in those individuals exposed to this compound or its derivatives. Technically Isophorone diisocyanate is part of the human exposome. The exposome can be defined as the collection of all the exposures of an individual in a lifetime and how those exposures relate to health. An individual's exposure begins before birth and includes insults from environmental and occupational sources.
Structure
Thumb
Synonyms
ValueSource
3-Isocyanatomethyl-3,5,5-trimethylcyclohexylisocyanateChEBI
IPDIChEBI
Isocyanic acid, methylene(3,5,5-trimethyl-3,1-cyclohexylene) esterChEBI
Isophorone diamine diisocyanateChEBI
3-Isocyanatomethyl-3,5,5-trimethylcyclohexylisocyanic acidGenerator
Isocyanate, methylene(3,5,5-trimethyl-3,1-cyclohexylene) esterGenerator
Isophorone diamine diisocyanic acidGenerator
Isophorone diisocyanic acidGenerator
Chemical FormulaC12H18N2O2
Average Molecular Weight222.2835
Monoisotopic Molecular Weight222.13682783
IUPAC Name5-isocyanato-1-(isocyanatomethyl)-1,3,3-trimethylcyclohexane
Traditional Nameisophorone diisocyanate
CAS Registry NumberNot Available
SMILES
CC1(C)CC(CC(C)(CN=C=O)C1)N=C=O
InChI Identifier
InChI=1S/C12H18N2O2/c1-11(2)4-10(14-9-16)5-12(3,6-11)7-13-8-15/h10H,4-7H2,1-3H3
InChI KeyNIMLQBUJDJZYEJ-UHFFFAOYSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as isocyanates. These are organic compounds containing the isocyanic acid tautomer, HN=C=O, of cyanic acid, HOC#N or its hydrocarbyl derivatives RN=C=O.
KingdomOrganic compounds
Super ClassOrganic nitrogen compounds
ClassOrganonitrogen compounds
Sub ClassIsocyanates
Direct ParentIsocyanates
Alternative Parents
Substituents
  • Isocyanate
  • Organic 1,3-dipolar compound
  • Propargyl-type 1,3-dipolar organic compound
  • Organic oxygen compound
  • Organopnictogen compound
  • Organic oxide
  • Hydrocarbon derivative
  • Organooxygen compound
  • Aliphatic homomonocyclic compound
Molecular FrameworkAliphatic homomonocyclic compounds
External Descriptors
Ontology
Physiological effectNot Available
Disposition
ProcessNot Available
RoleNot Available
Physical Properties
StateNot Available
Experimental Molecular Properties
PropertyValueReference
Melting PointNot AvailableNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogPNot AvailableNot Available
Experimental Chromatographic PropertiesNot Available
Predicted Molecular Properties
PropertyValueSource
logP2.41ALOGPS
logP2.13ChemAxon
logS-3.6ALOGPS
pKa (Strongest Basic)-4.2ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count4ChemAxon
Hydrogen Donor Count0ChemAxon
Polar Surface Area58.86 ŲChemAxon
Rotatable Bond Count3ChemAxon
Refractivity59.25 m³·mol⁻¹ChemAxon
Polarizability23.73 ųChemAxon
Number of Rings1ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Predicted Chromatographic Properties

Predicted Collision Cross Sections

PredictorAdduct TypeCCS Value (Å2)Reference
DeepCCS[M+H]+151.03330932474
DeepCCS[M-H]-148.67530932474
DeepCCS[M-2H]-183.0930932474
DeepCCS[M+Na]+158.83530932474
AllCCS[M+H]+152.832859911
AllCCS[M+H-H2O]+149.232859911
AllCCS[M+NH4]+156.132859911
AllCCS[M+Na]+157.132859911
AllCCS[M-H]-154.932859911
AllCCS[M+Na-2H]-155.732859911
AllCCS[M+HCOO]-156.632859911

Predicted Retention Times

Underivatized

Chromatographic MethodRetention TimeReference
Predicted by Siyang on May 30, 202213.2536 minutes33406817
Predicted by Siyang using ReTip algorithm on June 8, 20221.53 minutes32390414
Fem_Long = Waters ACQUITY UPLC HSS T3 C18 with Water:MeOH and 0.1% Formic Acid1902.0 seconds40023050
Fem_Lipids = Ascentis Express C18 with (60:40 water:ACN):(90:10 IPA:ACN) and 10mM NH4COOH + 0.1% Formic Acid379.6 seconds40023050
Life_Old = Waters ACQUITY UPLC BEH C18 with Water:(20:80 acetone:ACN) and 0.1% Formic Acid166.4 seconds40023050
Life_New = RP Waters ACQUITY UPLC HSS T3 C18 with Water:(30:70 MeOH:ACN) and 0.1% Formic Acid196.2 seconds40023050
RIKEN = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid159.8 seconds40023050
Eawag_XBridgeC18 = XBridge C18 3.5u 2.1x50 mm with Water:MeOH and 0.1% Formic Acid540.9 seconds40023050
BfG_NTS_RP1 =Agilent Zorbax Eclipse Plus C18 (2.1 mm x 150 mm, 3.5 um) with Water:ACN and 0.1% Formic Acid711.9 seconds40023050
HILIC_BDD_2 = Merck SeQuant ZIC-HILIC with ACN(0.1% formic acid):water(16 mM ammonium formate)70.6 seconds40023050
UniToyama_Atlantis = RP Waters Atlantis T3 (2.1 x 150 mm, 5 um) with ACN:Water and 0.1% Formic Acid1072.9 seconds40023050
BDD_C18 = Hypersil Gold 1.9µm C18 with Water:ACN and 0.1% Formic Acid401.2 seconds40023050
UFZ_Phenomenex = Kinetex Core-Shell C18 2.6 um, 3.0 x 100 mm, Phenomenex with Water:MeOH and 0.1% Formic Acid1393.6 seconds40023050
SNU_RIKEN_POS = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid347.7 seconds40023050
RPMMFDA = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid365.0 seconds40023050
MTBLS87 = Merck SeQuant ZIC-pHILIC column with ACN:Water and :ammonium carbonate344.0 seconds40023050
KI_GIAR_zic_HILIC_pH2_7 = Merck SeQuant ZIC-HILIC with ACN:Water and 0.1% FA314.5 seconds40023050
Meister zic-pHILIC pH9.3 = Merck SeQuant ZIC-pHILIC column with ACN:Water 5mM NH4Ac pH9.3 and 5mM ammonium acetate in water16.6 seconds40023050

Predicted Kovats Retention Indices

Underivatized

MetaboliteSMILESKovats RI ValueColumn TypeReference
Isophorone diisocyanateCC1(C)CC(CC(C)(CN=C=O)C1)N=C=O2308.7Standard polar33892256
Isophorone diisocyanateCC1(C)CC(CC(C)(CN=C=O)C1)N=C=O1455.2Standard non polar33892256
Isophorone diisocyanateCC1(C)CC(CC(C)(CN=C=O)C1)N=C=O1554.4Semi standard non polar33892256
Spectra

GC-MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted GC-MSPredicted GC-MS Spectrum - Isophorone diisocyanate GC-MS (Non-derivatized) - 70eV, Positivesplash10-0a4i-5910000000-c19afc76593fa47648d72021-09-23Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Isophorone diisocyanate GC-MS (Non-derivatized) - 70eV, PositiveNot Available2021-10-12Wishart LabView Spectrum

MS/MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Isophorone diisocyanate 10V, Positive-QTOFsplash10-00e9-0980000000-42c7c2fdf96137f312f02016-08-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Isophorone diisocyanate 20V, Positive-QTOFsplash10-001i-0910000000-4bbecbf9713e6585a0492016-08-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Isophorone diisocyanate 40V, Positive-QTOFsplash10-01x0-5900000000-4b64defed855560bd0a32016-08-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Isophorone diisocyanate 10V, Negative-QTOFsplash10-00di-2190000000-0de30ae86d208722f0e22016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Isophorone diisocyanate 20V, Negative-QTOFsplash10-006x-9250000000-6156d7e07d2bd9b7d94e2016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Isophorone diisocyanate 40V, Negative-QTOFsplash10-0006-9000000000-1bb6b7de2c6d6e0553622016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Isophorone diisocyanate 10V, Positive-QTOFsplash10-0019-0900000000-432861dca6d6eb8c28892021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Isophorone diisocyanate 20V, Positive-QTOFsplash10-074i-2900000000-aa9fcdf85289714eaa272021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Isophorone diisocyanate 40V, Positive-QTOFsplash10-05fr-4900000000-9320709b371f2ef9bbbd2021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Isophorone diisocyanate 10V, Negative-QTOFsplash10-006x-2960000000-5b2662cf43d5eeb7882d2021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Isophorone diisocyanate 20V, Negative-QTOFsplash10-0006-9600000000-fa1943750a1b1b783a5c2021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Isophorone diisocyanate 40V, Negative-QTOFsplash10-0006-9000000000-51d283be4237ed8ab3762021-10-12Wishart LabView Spectrum
Biological Properties
Cellular LocationsNot Available
Biospecimen Locations
  • Blood
Tissue LocationsNot Available
Pathways
Normal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
BloodDetected but not QuantifiedNot QuantifiedNot SpecifiedNot SpecifiedNormal details
Abnormal Concentrations
Not Available
Associated Disorders and Diseases
Disease ReferencesNone
Associated OMIM IDsNone
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FooDB IDNot Available
KNApSAcK IDNot Available
Chemspider IDNot Available
KEGG Compound IDNot Available
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkIsophorone_diisocyanate
METLIN IDNot Available
PubChem Compound169132
PDB IDNot Available
ChEBI ID53214
Food Biomarker OntologyNot Available
VMH IDNot Available
MarkerDB IDNot Available
Good Scents IDNot Available
References
Synthesis ReferenceNot Available
Material Safety Data Sheet (MSDS)Not Available
General References
  1. Barupal DK, Fiehn O: Generating the Blood Exposome Database Using a Comprehensive Text Mining and Database Fusion Approach. Environ Health Perspect. 2019 Sep;127(9):97008. doi: 10.1289/EHP4713. Epub 2019 Sep 26. [PubMed:31557052 ]