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Record Information
Version3.6
Creation Date2005-11-16 15:48:42 UTC
Update Date2013-02-09 00:08:40 UTC
HMDB IDHMDB00482
Secondary Accession NumbersNone
Metabolite Identification
Common NameCaprylic acid
DescriptionCaprylic acid is the common name for the eight-carbon straight chain fatty acid known by the systematic name octanoic acid. It is found naturally in coconuts and breast milk. It is an oily liquid with a slightly unpleasant rancid taste that is minimally soluble in water. Caprylic acid is used commercially in the production of esters used in perfumery and also in the manufacture of dyes. (wikipedia).
Structure
Thumb
Synonyms
  1. 1-Heptanecarboxylate
  2. 1-Heptanecarboxylic acid
  3. Caprylate
  4. Caprylic acid
  5. Emery 657
  6. Kortacid 0899
  7. Lunac 8-95
  8. Lunac 8-98
  9. N-Caprylate
  10. N-Caprylic acid
  11. N-Octanoate
  12. N-Octanoic acid
  13. N-Octoate
  14. N-Octoic acid
  15. N-Octylate
  16. N-Octylic acid
  17. Neo-Fat 8
  18. Neo-Fat 8S
  19. Octylate
  20. Octylic acid
  21. Prifac 2901
Chemical FormulaC8H16O2
Average Molecular Weight144.2114
Monoisotopic Molecular Weight144.115029756
IUPAC Nameoctanoic acid
Traditional IUPAC Namecaprylic acid
CAS Registry Number124-07-2
SMILES
CCCCCCCC(O)=O
InChI Identifier
InChI=1S/C8H16O2/c1-2-3-4-5-6-7-8(9)10/h2-7H2,1H3,(H,9,10)
InChI KeyWWZKQHOCKIZLMA-UHFFFAOYSA-N
Chemical Taxonomy
KingdomOrganic Compounds
Super ClassLipids
ClassFatty Acids and Conjugates
Sub ClassStraight Chain Fatty Acids
Other Descriptors
  • Aliphatic Acyclic Compounds
  • Organic Compounds
  • Saturated fatty acids(KEGG)
  • Straight chain fatty acids(KEGG)
  • Straight chain fatty acids(Lipidmaps)
  • medium-chain fatty acid(ChEBI)
  • straight-chain saturated fatty acid(ChEBI)
Substituents
  • Carboxylic Acid
Direct ParentStraight Chain Fatty Acids
Ontology
StatusDetected and Quantified
Origin
  • Endogenous
  • Food
Biofunction
  • Cell signaling
  • Fuel and energy storage
  • Fuel or energy source
  • Membrane integrity/stability
Application
  • Nutrients
  • Stabilizers
  • Surfactants and Emulsifiers
Cellular locations
  • Cytoplasm
  • Extracellular
  • Membrane (predicted from logP)
Physical Properties
StateLiquid
Experimental Properties
PropertyValueReference
Melting Point16.5 °CNot Available
Boiling PointNot AvailableNot Available
Water Solubility0.789 mg/mLNot Available
LogP3.05HANSCH,C ET AL. (1995)
Predicted Properties
PropertyValueSource
Water Solubility0.91 g/LALOGPS
logP2.92ALOGPS
logP2.7ChemAxon
logS-2.2ALOGPS
pKa (Strongest Acidic)5.19ChemAxon
Physiological Charge-1ChemAxon
Hydrogen Acceptor Count2ChemAxon
Hydrogen Donor Count1ChemAxon
Polar Surface Area37.3ChemAxon
Rotatable Bond Count6ChemAxon
Refractivity40.28ChemAxon
Polarizability17.42ChemAxon
Spectra
SpectraGC-MSMS/MSLC-MS1D NMR2D NMR
Biological Properties
Cellular Locations
  • Cytoplasm
  • Extracellular
  • Membrane (predicted from logP)
Biofluid Locations
  • Blood
  • Cerebrospinal Fluid (CSF)
  • Urine
Tissue Location
  • Epidermis
Pathways
NameSMPDB LinkKEGG Link
Beta Oxidation of Very Long Chain Fatty AcidsSMP00052map01040
Fatty Acid BiosynthesisSMP00456Not Available
Mitochondrial Beta-Oxidation of Short Chain Saturated Fatty AcidsSMP00480Not Available
Normal Concentrations
BiofluidStatusValueAgeSexConditionReferenceDetails
BloodDetected and Quantified2.5 (0.0-5.0) uMAdult (>18 years old)BothNormal
    • Geigy Scientific ...
details
BloodDetected and Quantified8.0 (5.0-19.0) uMAdult (>18 years old)BothNormal details
Cerebrospinal Fluid (CSF)Detected and Quantified2.50 +/- 2.50 uMAdult (>18 years old)Not SpecifiedNormal details
UrineDetected and Quantified0.39 +/- 0.37 umol/mmol creatinineInfant (0-1 year old)BothNormal details
UrineDetected but not QuantifiedNot ApplicableAdult (>18 years old)BothNormal details
UrineDetected but not QuantifiedNot ApplicableAdult (>18 years old)BothNormal details
Abnormal Concentrations
BiofluidStatusValueAgeSexConditionReferenceDetails
UrineDetected but not QuantifiedNot ApplicableAdult (>18 years old)BothBreast cancer details
Associated Disorders and Diseases
Disease ReferencesNone
Associated OMIM IDsNone
DrugBank IDDB04519
DrugBank Metabolite IDNot Available
Phenol Explorer Compound IDNot Available
Phenol Explorer Metabolite IDNot Available
FoodDB IDFDB003336
KNApSAcK IDC00001231
Chemspider ID370
KEGG Compound IDC06423
BioCyc IDCPD-195
BiGG ID48223
Wikipedia LinkCaprylic acid
NuGOwiki LinkHMDB00482
Metagene LinkHMDB00482
METLIN ID5469
PubChem Compound379
PDB IDOCA
ChEBI ID28837
References
Synthesis ReferenceCaprylic acid. Jpn. Kokai Tokkyo Koho (1983), 4 pp.
Material Safety Data Sheet (MSDS)Download (PDF)
General References
  1. Hoffmann GF, Meier-Augenstein W, Stockler S, Surtees R, Rating D, Nyhan WL: Physiology and pathophysiology of organic acids in cerebrospinal fluid. J Inherit Metab Dis. 1993;16(4):648-69. Pubmed: 8412012
  2. Giannakou SA, Dallas PP, Rekkas DM, Choulis NH: In vitro evaluation of nimodipine permeation through human epidermis using response surface methodology. Int J Pharm. 2002 Jul 8;241(1):27-34. Pubmed: 12086718
  3. Dieterle F, Muller-Hagedorn S, Liebich HM, Gauglitz G: Urinary nucleosides as potential tumor markers evaluated by learning vector quantization. Artif Intell Med. 2003 Jul;28(3):265-79. Pubmed: 12927336
  4. Nair MK, Joy J, Venkitanarayanan KS: Inactivation of Enterobacter sakazakii in reconstituted infant formula by monocaprylin. J Food Prot. 2004 Dec;67(12):2815-9. Pubmed: 15633694
  5. Habeeb AF, Francis RD: Preparation of human immunoglobulin by caprylic acid precipitation. Prep Biochem. 1984;14(1):1-17. Pubmed: 6718324

Enzymes

General function:
Involved in acyltransferase activity
Specific function:
Beta-oxidation of fatty acids. The highest activity concerns the C6 to C10 chain length substrate. Converts the end product of pristanic acid beta oxidation, 4,8-dimethylnonanoyl-CoA, to its corresponding carnitine ester.
Gene Name:
CROT
Uniprot ID:
Q9UKG9
Molecular weight:
10213.63
General function:
Involved in acyltransferase activity
Specific function:
Not Available
Gene Name:
CPT2
Uniprot ID:
P23786
Molecular weight:
73776.335
General function:
Involved in transporter activity
Specific function:
Mediates the transport of acylcarnitines of different length across the mitochondrial inner membrane from the cytosol to the mitochondrial matrix for their oxidation by the mitochondrial fatty acid-oxidation pathway.
Gene Name:
SLC25A20
Uniprot ID:
O43772
Molecular weight:
32943.46

Transporters

General function:
Involved in transporter activity
Specific function:
Mediates saturable uptake of estrone sulfate, dehydroepiandrosterone sulfate and related compounds
Gene Name:
SLC22A11
Uniprot ID:
Q9NSA0
Molecular weight:
59970.9
References
  1. Babu E, Takeda M, Narikawa S, Kobayashi Y, Enomoto A, Tojo A, Cha SH, Sekine T, Sakthisekaran D, Endou H: Role of human organic anion transporter 4 in the transport of ochratoxin A. Biochim Biophys Acta. 2002 Jun 12;1590(1-3):64-75. Pubmed: 12063169
General function:
Involved in ion transmembrane transporter activity
Specific function:
Involved in the renal elimination of endogenous and exogenous organic anions. Functions as organic anion exchanger when the uptake of one molecule of organic anion is coupled with an efflux of one molecule of endogenous dicarboxylic acid (glutarate, ketoglutarate, etc). Mediates the sodium-independent uptake of 2,3-dimercapto-1-propanesulfonic acid (DMPS). Mediates the sodium-independent uptake of p- aminohippurate (PAH), ochratoxin (OTA), acyclovir (ACV), 3'-azido- 3-'deoxythymidine (AZT), cimetidine (CMD), 2,4-dichloro- phenoxyacetate (2,4-D), hippurate (HA), indoleacetate (IA), indoxyl sulfate (IS) and 3-carboxy-4-methyl-5-propyl-2- furanpropionate (CMPF), cidofovir, adefovir, 9-(2- phosphonylmethoxyethyl) guanine (PMEG), 9-(2- phosphonylmethoxyethyl) diaminopurine (PMEDAP) and edaravone sulfate. PAH uptake is inhibited by p- chloromercuribenzenesulphonate (PCMBS), diethyl pyrocarbonate (DEPC), sulindac, diclofenac, carprofen, glutarate and okadaic acid. PAH uptake is inhibited by benzothiazolylcysteine (BTC), S-chlorotrifluoroethylcysteine (CTFC), cysteine S-conjugates S-dichlorovinylcysteine (DCVC), furosemide, steviol, phorbol 12-myristate 13-acetate (PMA), calcium ionophore A23187, benzylpenicillin, furosemide, indomethacin, bumetamide, losartan, probenecid, phenol red, urate, and alpha-ketoglutarate
Gene Name:
SLC22A6
Uniprot ID:
Q4U2R8
Molecular weight:
61815.8
References
  1. Jung KY, Takeda M, Kim DK, Tojo A, Narikawa S, Yoo BS, Hosoyamada M, Cha SH, Sekine T, Endou H: Characterization of ochratoxin A transport by human organic anion transporters. Life Sci. 2001 Sep 21;69(18):2123-35. Pubmed: 11669456
  2. Tsuda M, Sekine T, Takeda M, Cha SH, Kanai Y, Kimura M, Endou H: Transport of ochratoxin A by renal multispecific organic anion transporter 1. J Pharmacol Exp Ther. 1999 Jun;289(3):1301-5. Pubmed: 10336520