Record Information
Version1.0
Creation date2010-04-08 22:05:44 UTC
Update date2019-11-26 02:58:46 UTC
Primary IDFDB003274
Secondary Accession Numbers
  • FDB030942
  • FDB004319
Chemical Information
FooDB Name2-Methyl-1-propanol
DescriptionIsobutanol, also known as iso-butyl alcohol or 2-methylpropanol, belongs to the class of organic compounds known as primary alcohols. Primary alcohols are compounds comprising the primary alcohol functional group, with the general structure RCOH (R=alkyl, aryl). Thus, isobutanol is considered to be a fatty alcohol lipid molecule. Isobutanol is a very hydrophobic molecule, practically insoluble (in water), and relatively neutral. Isobutanol exists in all eukaryotes, ranging from yeast to humans. Isobutanol is a bitter, ether, and solvent tasting compound. Isobutanol is found, on average, in the highest concentration within a few different foods, such as grape wines, white wines, and beers and in a lower concentration in safflowers, sweet oranges, and corns. Isobutanol has also been detected, but not quantified in, several different foods, such as cottonseeds, oregon yampahs, common hazelnuts, arrowroots, and alaska blueberries. This could make isobutanol a potential biomarker for the consumption of these foods.
CAS Number78-83-1
Structure
Thumb
Synonyms
SynonymSource
1-HydroxymethylpropaneChEBI
2-Methyl-1-propanolChEBI
2-MethylpropanolChEBI
I-butanolChEBI
I-butyl alcoholChEBI
IBAChEBI
Iso-butyl alcoholChEBI
Iso-C4H9OHChEBI
Isobutyl alcoholChEBI
IsobutylalkoholChEBI
IsopropylcarbinolChEBI
2-Methyl propanolHMDB
2-Methyl-1-propanyl alcoholHMDB
2-Methylpropan-1-olHMDB
2-MethylpropanoIHMDB
2-Methylpropanol-1HMDB
2-Methylpropyl alcoholHMDB
Alcool isobutyliqueHMDB
Isopropyl carbitolHMDB
Methyl-2 propanol-1HMDB
Isobutyl alcohol, aluminum saltHMDB
Isobutyl alcohol, sodium saltHMDB
Isobutyl alcohol, titanium (+4) saltHMDB
IsobutanolMeSH
1-Propanol, 2-methyl-biospider
2-methyl-1-propanyl alcoholbiospider
2-methylpropanoIbiospider
Butanol-isobiospider
FEMA 2179db_source
Isobutyl alcohol, 8CIdb_source
Propanol, 2-methyl-biospider
Predicted Properties
PropertyValueSource
Water Solubility140 g/LALOGPS
logP0.6ALOGPS
logP0.73ChemAxon
logS0.28ALOGPS
pKa (Strongest Acidic)17.33ChemAxon
pKa (Strongest Basic)-1.8ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count1ChemAxon
Hydrogen Donor Count1ChemAxon
Polar Surface Area20.23 ŲChemAxon
Rotatable Bond Count1ChemAxon
Refractivity22.01 m³·mol⁻¹ChemAxon
Polarizability9.07 ųChemAxon
Number of Rings0ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Chemical FormulaC4H10O
IUPAC name2-methylpropan-1-ol
InChI IdentifierInChI=1S/C4H10O/c1-4(2)3-5/h4-5H,3H2,1-2H3
InChI KeyZXEKIIBDNHEJCQ-UHFFFAOYSA-N
Isomeric SMILESCC(C)CO
Average Molecular Weight74.1216
Monoisotopic Molecular Weight74.073164942
Classification
Description belongs to the class of organic compounds known as primary alcohols. Primary alcohols are compounds comprising the primary alcohol functional group, with the general structure RCOH (R=alkyl, aryl).
KingdomOrganic compounds
Super ClassOrganic oxygen compounds
ClassOrganooxygen compounds
Sub ClassAlcohols and polyols
Direct ParentPrimary alcohols
Alternative Parents
Substituents
  • Hydrocarbon derivative
  • Primary alcohol
  • Aliphatic acyclic compound
Molecular FrameworkAliphatic acyclic compounds
External Descriptors
Ontology
Physiological effect

Organoleptic effect:

Disposition

Route of exposure:

Biological location:

Source:

Physico-Chemical Properties - Experimental
Physico-Chemical Properties - Experimental
PropertyValueReference
Physical stateLiquid
Physical DescriptionNot Available
Mass CompositionC 64.82%; H 13.60%; O 21.59%DFC
Melting PointFp -108°DFC
Boiling PointBp 108.1°DFC
Experimental Water Solubility85 mg/mL at 25 oCVALVANI,SC et al. (1981)
Experimental logP0.76HANSCH,C ET AL. (1995)
Experimental pKaNot Available
Isoelectric pointNot Available
ChargeNot Available
Optical RotationNot Available
Spectroscopic UV DataNot Available
DensityNot Available
Refractive IndexNot Available
Spectra
Spectra
Spectrum TypeDescriptionSplash KeyView
GC-MSGC-MS Spectrum - EI-B (Non-derivatized)splash10-0006-9000000000-7f721031d45407da0ffaJSpectraViewer | MoNA
GC-MSGC-MS Spectrum - EI-B (Non-derivatized)splash10-0006-9000000000-8f50f8925987fafa9f6eJSpectraViewer | MoNA
GC-MSGC-MS Spectrum - EI-B (Non-derivatized)splash10-0006-9000000000-a022508915e78517db51JSpectraViewer | MoNA
GC-MSGC-MS Spectrum - EI-B (Non-derivatized)splash10-0006-9000000000-7f721031d45407da0ffaJSpectraViewer | MoNA
GC-MSGC-MS Spectrum - EI-B (Non-derivatized)splash10-0006-9000000000-8f50f8925987fafa9f6eJSpectraViewer | MoNA
GC-MSGC-MS Spectrum - EI-B (Non-derivatized)splash10-0006-9000000000-a022508915e78517db51JSpectraViewer | MoNA
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, Positivesplash10-0006-9000000000-c81d9b093b562948ccc2JSpectraViewer
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (1 TMS) - 70eV, Positivesplash10-0fnl-9300000000-9cc13c092f82e7caebedJSpectraViewer
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-056r-9000000000-51f6abf0e4afb219bd9dJSpectraViewer
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-0a4i-9000000000-5c3b0b379d64147f0e14JSpectraViewer
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-0a4i-9000000000-aed2ffb2e0c694af93eaJSpectraViewer
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-00di-9000000000-4648efd7a78339de7e6cJSpectraViewer
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-00di-9000000000-5d4c9a7c73ad8673a5e5JSpectraViewer
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-0ab9-9000000000-c25bee7b5f5bbb13555bJSpectraViewer
MSMass Spectrum (Electron Ionization)splash10-0006-9000000000-df76ec6cf6a8bfca3cf4JSpectraViewer | MoNA
1D NMR1H NMR SpectrumNot AvailableJSpectraViewer
1D NMR13C NMR SpectrumNot AvailableJSpectraViewer
ChemSpider ID6312
ChEMBL IDCHEMBL269630
KEGG Compound IDC14710
Pubchem Compound ID6560
Pubchem Substance IDNot Available
ChEBI ID46645
Phenol-Explorer IDNot Available
DrugBank IDNot Available
HMDB IDHMDB06006
CRC / DFC (Dictionary of Food Compounds) IDCVJ89-K:CVJ89-K
EAFUS ID1856
Dr. Duke ID2-METHYL-PROPAN-1-OL|ISOBUTANOL|ISOBUTYL-ALCOHOL|2-METHYL-PROPANOL|2-METHYL-1-PROPANOL
BIGG IDNot Available
KNApSAcK IDNot Available
HET IDNot Available
Food Biomarker OntologyNot Available
VMH IDNot Available
Flavornet ID78-83-1
GoodScent IDrw1028231
SuperScent IDNot Available
Wikipedia IDhttp://en.wikipedia.org/wiki/Isobutanol
Phenol-Explorer Metabolite IDNot Available
Duplicate IDSNot Available
Old DFC IDSNot Available
Associated Foods
FoodContent Range AverageReference
FoodReference
Biological Effects and Interactions
Health Effects / Bioactivities
DescriptorIDDefinitionReference
irritantDUKE
narcotic35482 A narcotic or opioid substance, synthetic or semisynthetic agent producing profound analgesia, drowsiness, and changes in mood.DUKE
Enzymes
NameGene NameUniProt ID
Serum paraoxonase/lactonase 3PON3Q15166
Serum paraoxonase/arylesterase 1PON1P27169
Serum paraoxonase/arylesterase 2PON2Q15165
Lysosomal acid phosphataseACP2P11117
Sulfotransferase family cytosolic 2B member 1SULT2B1O00204
Alcohol dehydrogenase [NADP(+)]AKR1A1P14550
Beta-glucuronidaseGUSBP08236
Plasma alpha-L-fucosidaseFUCA2Q9BTY2
Lecithin retinol acyltransferaseLRATO95237
Nuclear receptor subfamily 1 group I member 3NR1I3Q14994
Fatty acyl-CoA reductase 2FAR2Q96K12
Acyl-CoA wax alcohol acyltransferase 2AWAT2Q6E213
Testicular acid phosphataseACPTQ9BZG2
Carboxylesterase 5ACES5AQ6NT32
Acid phosphatase-like protein 2ACPL2Q8TE99
Synaptic vesicle membrane protein VAT-1 homolog-likeVAT1LQ9HCJ6
Quinone oxidoreductase PIG3TP53I3Q53FA7
Synaptic vesicle membrane protein VAT-1 homologVAT1Q99536
PathwaysNot Available
MetabolismNot Available
BiosynthesisNot Available
Organoleptic Properties
Flavours
FlavorCitations
wine
  1. Arn, H, Acree TE. “Flavornet: A database of aroma compounds based on odor potency in natural products”. Developments in Food Science 40 (1998): 27. doi:10.1016/S0167-4501(98)80029-0
  2. The Good Scents Company (2009). Flavor and fragrance information catalog. <http://www.thegoodscentscompany.com/allprod.html> Accessed 15.10.23.
solvent
  1. Arn, H, Acree TE. “Flavornet: A database of aroma compounds based on odor potency in natural products”. Developments in Food Science 40 (1998): 27. doi:10.1016/S0167-4501(98)80029-0
bitter
  1. Arn, H, Acree TE. “Flavornet: A database of aroma compounds based on odor potency in natural products”. Developments in Food Science 40 (1998): 27. doi:10.1016/S0167-4501(98)80029-0
ether
  1. The Good Scents Company (2009). Flavor and fragrance information catalog. <http://www.thegoodscentscompany.com/allprod.html> Accessed 15.10.23.
Files
MSDSshow
References
Synthesis ReferenceNot Available
General ReferenceNot Available
Content Reference— Duke, James. 'Dr. Duke's Phytochemical and Ethnobotanical Databases. United States Department of Agriculture.' Agricultural Research Service, Accessed April 27 (2004).