Hmdb loader
Record Information
Version5.0
StatusDetected but not Quantified
Creation Date2021-09-11 11:35:34 UTC
Update Date2021-09-26 23:06:22 UTC
HMDB IDHMDB0253250
Secondary Accession NumbersNone
Metabolite Identification
Common NameHydrogenated MDI
DescriptionMethylene bis(4-cyclohexylisocyanate), also known as dicyclohexylmethane 4,4'-diisocyanate or 4,4'-diisocyanatodicyclohexylmethane, 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 mainly metabolized into thiocyanate by either rhodanese or 3-mercaptopyruvate sulfur transferase. 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). The binding of cyanide to this cytochrome prevents transport of electrons from cytochrome c oxidase to oxygen. It complexes with the ferric iron atom in this enzyme. Methylene bis(4-cyclohexylisocyanate) is an extremely weak basic (essentially neutral) compound (based on its pKa). Methylene bis(4-cyclohexylisocyanate) is a potentially toxic compound. Cyanide is also known produce some of its toxic effects by binding to catalase, glutathione peroxidase, methemoglobin, hydroxocobalamin, phosphatase, tyrosinase, ascorbic acid oxidase, xanthine oxidase, succinic dehydrogenase, and Cu/Zn superoxide dismutase. Chronic inhalation of cyanide causes breathing difficulties, chest pain, vomiting, blood changes, headaches, and enlargement of the thyroid gland. Cyanide is rapidly alsorbed through oral, inhalation, and dermal routes and distributed throughout the body. 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. This compound has been identified in human blood as reported by (PMID: 31557052 ). Hydrogenated mdi is not a naturally occurring metabolite and is only found in those individuals exposed to this compound or its derivatives. Technically Hydrogenated MDI 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
4,4'-DiisocyanatodicyclohexylmethaneChEBI
4,4'-Methylenedi(cyclohexyl isocyanate)ChEBI
Bis(4-isocyanatocyclohexyl)methaneChEBI
Dicyclohexylmethane 4,4'-diisocyanateChEBI
Dicyclohexylmethane-4,4'-di-isocyanateChEBI
HMDIChEBI
Hydrogenated mdiChEBI
Hylene WChEBI
Isocyanic acid, methylenedi-4,1-cyclohexylene esterChEBI
Methylene bis-(4-cyclohexylisocyanate)ChEBI
4,4'-Methylenedi(cyclohexyl isocyanic acid)Generator
Dicyclohexylmethane 4,4'-diisocyanic acidGenerator
Dicyclohexylmethane-4,4'-di-isocyanic acidGenerator
Isocyanate, methylenedi-4,1-cyclohexylene esterGenerator
Methylene bis-(4-cyclohexylisocyanic acid)Generator
Methylene bis(4-cyclohexylisocyanic acid)Generator
Methylene bis(4-cyclohexylisocyanate), (trans-trans)-isomerMeSH
Dicyclohexylmethane-4,4'-diisocyanateMeSH
HMDI CPDMeSH
4,4-Methylene biscyclohexyl diisocyanateMeSH
Chemical FormulaC15H22N2O2
Average Molecular Weight262.3474
Monoisotopic Molecular Weight262.168127958
IUPAC Name1-isocyanato-4-[(4-isocyanatocyclohexyl)methyl]cyclohexane
Traditional NameHMDI
CAS Registry NumberNot Available
SMILES
O=C=NC1CCC(CC2CCC(CC2)N=C=O)CC1
InChI Identifier
InChI=1S/C15H22N2O2/c18-10-16-14-5-1-12(2-6-14)9-13-3-7-15(8-4-13)17-11-19/h12-15H,1-9H2
InChI KeyKORSJDCBLAPZEQ-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
logP3.98ALOGPS
logP3.18ChemAxon
logS-4.2ALOGPS
pKa (Strongest Basic)-3.6ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count4ChemAxon
Hydrogen Donor Count0ChemAxon
Polar Surface Area58.86 ŲChemAxon
Rotatable Bond Count4ChemAxon
Refractivity71.4 m³·mol⁻¹ChemAxon
Polarizability29.91 ųChemAxon
Number of Rings2ChemAxon
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]+163.95730932474
DeepCCS[M-H]-161.59930932474
DeepCCS[M-2H]-194.64330932474
DeepCCS[M+Na]+170.0530932474
AllCCS[M+H]+164.532859911
AllCCS[M+H-H2O]+161.232859911
AllCCS[M+NH4]+167.632859911
AllCCS[M+Na]+168.532859911
AllCCS[M-H]-169.432859911
AllCCS[M+Na-2H]-169.532859911
AllCCS[M+HCOO]-169.832859911

Predicted Retention Times

Underivatized

Chromatographic MethodRetention TimeReference
Predicted by Siyang on May 30, 202215.7396 minutes33406817
Predicted by Siyang using ReTip algorithm on June 8, 20221.7 minutes32390414
Fem_Long = Waters ACQUITY UPLC HSS T3 C18 with Water:MeOH and 0.1% Formic Acid2463.1 seconds40023050
Fem_Lipids = Ascentis Express C18 with (60:40 water:ACN):(90:10 IPA:ACN) and 10mM NH4COOH + 0.1% Formic Acid482.5 seconds40023050
Life_Old = Waters ACQUITY UPLC BEH C18 with Water:(20:80 acetone:ACN) and 0.1% Formic Acid199.4 seconds40023050
Life_New = RP Waters ACQUITY UPLC HSS T3 C18 with Water:(30:70 MeOH:ACN) and 0.1% Formic Acid243.0 seconds40023050
RIKEN = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid485.3 seconds40023050
Eawag_XBridgeC18 = XBridge C18 3.5u 2.1x50 mm with Water:MeOH and 0.1% Formic Acid662.3 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 Acid829.5 seconds40023050
HILIC_BDD_2 = Merck SeQuant ZIC-HILIC with ACN(0.1% formic acid):water(16 mM ammonium formate)131.6 seconds40023050
UniToyama_Atlantis = RP Waters Atlantis T3 (2.1 x 150 mm, 5 um) with ACN:Water and 0.1% Formic Acid1407.1 seconds40023050
BDD_C18 = Hypersil Gold 1.9µm C18 with Water:ACN and 0.1% Formic Acid474.3 seconds40023050
UFZ_Phenomenex = Kinetex Core-Shell C18 2.6 um, 3.0 x 100 mm, Phenomenex with Water:MeOH and 0.1% Formic Acid1542.3 seconds40023050
SNU_RIKEN_POS = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid353.7 seconds40023050
RPMMFDA = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid409.3 seconds40023050
MTBLS87 = Merck SeQuant ZIC-pHILIC column with ACN:Water and :ammonium carbonate380.4 seconds40023050
KI_GIAR_zic_HILIC_pH2_7 = Merck SeQuant ZIC-HILIC with ACN:Water and 0.1% FA306.7 seconds40023050
Meister zic-pHILIC pH9.3 = Merck SeQuant ZIC-pHILIC column with ACN:Water 5mM NH4Ac pH9.3 and 5mM ammonium acetate in water56.0 seconds40023050

Predicted Kovats Retention Indices

Underivatized

MetaboliteSMILESKovats RI ValueColumn TypeReference
Hydrogenated MDIO=C=NC1CCC(CC2CCC(CC2)N=C=O)CC12909.7Standard polar33892256
Hydrogenated MDIO=C=NC1CCC(CC2CCC(CC2)N=C=O)CC12321.4Standard non polar33892256
Hydrogenated MDIO=C=NC1CCC(CC2CCC(CC2)N=C=O)CC12165.0Semi standard non polar33892256
Spectra

GC-MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted GC-MSPredicted GC-MS Spectrum - Hydrogenated MDI GC-MS (Non-derivatized) - 70eV, Positivesplash10-00fr-2920000000-0c94def34397a34f48d32021-09-24Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Hydrogenated MDI 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 - Hydrogenated MDI 10V, Positive-QTOFsplash10-03di-0190000000-534aa45a1d066610b6ce2016-08-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Hydrogenated MDI 20V, Positive-QTOFsplash10-03k9-2960000000-71c522e2d1c1daec94992016-08-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Hydrogenated MDI 40V, Positive-QTOFsplash10-0036-9820000000-adca25992b6ad9ad91d52016-08-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Hydrogenated MDI 10V, Negative-QTOFsplash10-03di-0090000000-45f460f14583b9f393372016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Hydrogenated MDI 20V, Negative-QTOFsplash10-03di-3090000000-ce3cf414e55d5e272e722016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Hydrogenated MDI 40V, Negative-QTOFsplash10-0006-9000000000-5967e7479c7390704b672016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Hydrogenated MDI 10V, Positive-QTOFsplash10-02g9-0190000000-1791c7a112d2dfae44df2021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Hydrogenated MDI 20V, Positive-QTOFsplash10-000i-1390000000-28c5b8c1166209bd53962021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Hydrogenated MDI 40V, Positive-QTOFsplash10-00c3-4930000000-ac3d778288cb808243232021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Hydrogenated MDI 10V, Negative-QTOFsplash10-01q9-0090000000-3da56d4bf3a0a0bdcd0f2021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Hydrogenated MDI 20V, Negative-QTOFsplash10-0006-9000000000-90726b17dc36e29c52992021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Hydrogenated MDI 40V, Negative-QTOFsplash10-0006-9210000000-3039fb3457d68fe3b19f2021-10-12Wishart 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 LinkNot Available
METLIN IDNot Available
PubChem Compound21202
PDB IDNot Available
ChEBI ID53216
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 ]