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Record Information
Version5.0
StatusDetected and Quantified
Creation Date2006-08-13 10:11:15 UTC
Update Date2023-02-21 17:16:53 UTC
HMDB IDHMDB0004063
Secondary Accession Numbers
  • HMDB04063
Metabolite Identification
Common NameMetanephrine
DescriptionMetanephrine is a metabolite of epinephrine created by action of catechol O-methyltransferase on epinephrine. Technically it is a product of epinephrine O-methylation. It is a commonly occurring, pharmacologically and physiologically inactive metabolite of epinephrine. The measurement of plasma free metanephrines is considered to be the best tool in the diagnosis of pheochromocytoma, a rare kind of adrenal medullary neoplasm. In adrenal chromaffin cells, leakage of norepinephrine and epinephrine from storage granules leads to substantial intracellular production of the O-methylated metabolite metanephrine. In fact, the adrenals constitute the single largest source out of any organ system including the liver for circulating metanephrine. In humans, about 93 percent of circulating metanephrine is derived from catecholamines metabolized within adrenal chromaffin cells. (PMID 15317907 ).
Structure
Thumb
Synonyms
ValueSource
(+/-)-metanephrineHMDB
3-Methoxy-adrenalineHMDB
3-MethoxyadrenalineHMDB
3-O-Methyl-adrenalineHMDB
3-O-MethylepinephrineHMDB
4-Hydroxy-3-methoxy-N-methylphenethanolamineHMDB
DL-3-O-MethyladrenalineHMDB
DL-MetanephrineHMDB
m-O-MethyladrenalineHMDB
MetadrenalineHMDB
Chemical FormulaC10H15NO3
Average Molecular Weight197.231
Monoisotopic Molecular Weight197.105193351
IUPAC Name4-[1-hydroxy-2-(methylamino)ethyl]-2-methoxyphenol
Traditional Name(+/-)-metanephrine
CAS Registry Number5001-33-2
SMILES
CNCC(O)C1=CC(OC)=C(O)C=C1
InChI Identifier
InChI=1S/C10H15NO3/c1-11-6-9(13)7-3-4-8(12)10(5-7)14-2/h3-5,9,11-13H,6H2,1-2H3
InChI KeyJWJCTZKFYGDABJ-UHFFFAOYSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as methoxyphenols. Methoxyphenols are compounds containing a methoxy group attached to the benzene ring of a phenol moiety.
KingdomOrganic compounds
Super ClassBenzenoids
ClassPhenols
Sub ClassMethoxyphenols
Direct ParentMethoxyphenols
Alternative Parents
Substituents
  • Methoxyphenol
  • Phenoxy compound
  • Anisole
  • Phenol ether
  • Methoxybenzene
  • Alkyl aryl ether
  • 1-hydroxy-2-unsubstituted benzenoid
  • Aralkylamine
  • Monocyclic benzene moiety
  • Secondary alcohol
  • 1,2-aminoalcohol
  • Secondary amine
  • Ether
  • Secondary aliphatic amine
  • Hydrocarbon derivative
  • Organooxygen compound
  • Organonitrogen compound
  • Organopnictogen compound
  • Organic oxygen compound
  • Amine
  • Organic nitrogen compound
  • Alcohol
  • Aromatic alcohol
  • Aromatic homomonocyclic compound
Molecular FrameworkAromatic homomonocyclic compounds
External Descriptors
Ontology
Physiological effect
Disposition
Process
RoleNot Available
Physical Properties
StateSolid
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
Predicted Chromatographic Properties
Spectra
Biological Properties
Cellular Locations
  • Cytoplasm
  • Extracellular
Biospecimen Locations
  • Blood
  • Cerebrospinal Fluid (CSF)
  • Urine
Tissue Locations
  • Adrenal Gland
  • Adrenal Medulla
Pathways
Normal Concentrations
Abnormal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
BloodDetected and Quantified0.00054 +/- 0.002 uMAdult (>18 years old)Not SpecifiedPheochromocytoma details
Associated Disorders and Diseases
Disease References
Pheochromocytoma
  1. Eisenhofer G, Keiser H, Friberg P, Mezey E, Huynh TT, Hiremagalur B, Ellingson T, Duddempudi S, Eijsbouts A, Lenders JW: Plasma metanephrines are markers of pheochromocytoma produced by catechol-O-methyltransferase within tumors. J Clin Endocrinol Metab. 1998 Jun;83(6):2175-85. [PubMed:9626157 ]
Associated OMIM IDs
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FooDB IDFDB023296
KNApSAcK IDNot Available
Chemspider ID19844
KEGG Compound IDC05588
BioCyc IDNot Available
BiGG ID46078
Wikipedia LinkMetanephrine
METLIN ID65
PubChem Compound21100
PDB IDNot Available
ChEBI ID144365
Food Biomarker OntologyNot Available
VMH IDMEPI
MarkerDB IDNot Available
Good Scents IDNot Available
References
Synthesis ReferenceNot Available
Material Safety Data Sheet (MSDS)Not Available
General References

Enzymes

General function:
Involved in oxidoreductase activity
Specific function:
Catalyzes the oxidative deamination of biogenic and xenobiotic amines and has important functions in the metabolism of neuroactive and vasoactive amines in the central nervous system and peripheral tissues. MAOB preferentially degrades benzylamine and phenylethylamine.
Gene Name:
MAOB
Uniprot ID:
P27338
Molecular weight:
58762.475
Reactions
Metanephrine + Water + Oxygen → 3-Methoxy-4-hydroxyphenylglycolaldehyde + Hydrogen peroxide + Methylaminedetails
General function:
Involved in oxidoreductase activity
Specific function:
Catalyzes the oxidative deamination of biogenic and xenobiotic amines and has important functions in the metabolism of neuroactive and vasoactive amines in the central nervous system and peripheral tissues. MAOA preferentially oxidizes biogenic amines such as 5-hydroxytryptamine (5-HT), norepinephrine and epinephrine.
Gene Name:
MAOA
Uniprot ID:
P21397
Molecular weight:
59681.27
Reactions
Metanephrine + Water + Oxygen → 3-Methoxy-4-hydroxyphenylglycolaldehyde + Hydrogen peroxide + Methylaminedetails
General function:
Involved in magnesium ion binding
Specific function:
Catalyzes the O-methylation, and thereby the inactivation, of catecholamine neurotransmitters and catechol hormones. Also shortens the biological half-lives of certain neuroactive drugs, like L-DOPA, alpha-methyl DOPA and isoproterenol.
Gene Name:
COMT
Uniprot ID:
P21964
Molecular weight:
30036.77
Reactions
S-Adenosylmethionine + Epinephrine → S-Adenosylhomocysteine + Metanephrinedetails