3-Methoxytyramine

3-Methoxytyramine
Names
	IUPAC name 4-(2-aminoethyl)-2-methoxyphenol
	Other names 3-O-methyldopamine
Identifiers
CAS Number	554-52-9 ;
3D model (JSmol)	Interactive image;
ChemSpider	1606 ;
ECHA InfoCard	100.122.789
IUPHAR/BPS	6642;
MeSH	3-methoxytyramine
PubChem CID	1669;
UNII	JCH2767EDP ;
CompTox Dashboard (EPA)	DTXSID40862189 ;
	InChI InChI=1S/C9H13NO2/c1-12-9-6-7(4-5-10)2-3-8(9)11/h2-3,6,11H,4-5,10H2,1H3 Key: DIVQKHQLANKJQO-UHFFFAOYSA-N ; InChI=1/C9H13NO2/c1-12-9-6-7(4-5-10)2-3-8(9)11/h2-3,6,11H,4-5,10H2,1H3 Key: DIVQKHQLANKJQO-UHFFFAOYAB;
	SMILES COc1cc(ccc1O)CCN;
Properties
Chemical formula	C9H13NO2
Molar mass	167.21 g/mol
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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	Infobox references

3-Methoxytyramine (3-MT), also known as 3-methoxy-4-hydroxyphenethylamine, is a human trace amine that occurs as a metabolite of the neurotransmitter dopamine.[1] It is formed by the introduction of a methyl group to dopamine by the enzyme catechol-O-methyl transferase (COMT). 3-MT can be further metabolized by the enzyme monoamine oxidase (MAO) to form homovanillic acid (HVA), which is then typically excreted in the urine.

Originally thought to be physiologically inactive, 3-MT has recently been shown to act as an agonist of human TAAR1.[1][2]

Occurrence

3-Methoxytyramine occurs naturally in the prickly pear cactus (genus Opuntia),[3] and is in general widespread throughout the Cactaceae.[4] It has also been found in crown gall tumors on Nicotiana sp.[5]

In humans, 3-methoxytyramine is a trace amine that occurs as a metabolite of dopamine.[1]

Biosynthetic pathways for catecholamines and trace amines in the human brain[6][7][8]

N-Methylphenethylamine

N-Methyltyramine

p-Octopamine

Synephrine

3-Methoxytyramine

AADC

primary
pathway

PNMT

AAAH

brain
CYP2D6

minor
pathway

COMT

DBH

In humans, catecholamines and phenethylaminergic trace amines are derived from the amino acid L-phenylalanine.

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References

Khan MZ, Nawaz W (October 2016). "The emerging roles of human trace amines and human trace amine-associated receptors (hTAARs) in central nervous system". Biomed. Pharmacother. 83: 439–449. doi:10.1016/j.biopha.2016.07.002. PMID 27424325.
Sotnikova TD, Beaulieu JM, Espinoza S, et al. (2010). "The dopamine metabolite 3-methoxytyramine is a neuromodulator". PLOS ONE. 5 (10): e13452. doi:10.1371/journal.pone.0013452. PMC 2956650. PMID 20976142.
Neuwinger, Hans Dieter (1996). "Cactaceae". African ethnobotany: poisons and drugs: chemistry, pharmacology, toxicology. CRC Press. p. 271. ISBN 978-3-8261-0077-2. Retrieved on June 12, 2009 through Google Book Search.
Smith T. A. (1977). "Phenethylamine and related compounds in plants". Phytochemistry. 16: 9–18. doi:10.1016/0031-9422(77)83004-5.
Mitchell S. D.; Firmin J. L.; Gray D. O. (1984). "Enhanced 3-methoxytyramine levels in crown gall tumours and other undifferentiated plant tissues". Biochem. J. 221: 891–5. doi:10.1042/bj2210891. PMC 1144120. PMID 6477503.
Broadley KJ (March 2010). "The vascular effects of trace amines and amphetamines". Pharmacology & Therapeutics. 125 (3): 363–375. doi:10.1016/j.pharmthera.2009.11.005. PMID 19948186.
Lindemann L, Hoener MC (May 2005). "A renaissance in trace amines inspired by a novel GPCR family". Trends in Pharmacological Sciences. 26 (5): 274–281. doi:10.1016/j.tips.2005.03.007. PMID 15860375.
Wang X, Li J, Dong G, Yue J (February 2014). "The endogenous substrates of brain CYP2D". European Journal of Pharmacology. 724: 211–218. doi:10.1016/j.ejphar.2013.12.025. PMID 24374199.

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[Human_trace_amines_and_hTAARs_October_2016_review-1] Khan MZ, Nawaz W (October 2016). "The emerging roles of human trace amines and human trace amine-associated receptors (hTAARs) in central nervous system". Biomed. Pharmacother. 83: 439–449. doi:10.1016/j.biopha.2016.07.002. PMID 27424325.

[pmid20976142-2] Sotnikova TD, Beaulieu JM, Espinoza S, et al. (2010). "The dopamine metabolite 3-methoxytyramine is a neuromodulator". PLOS ONE. 5 (10): e13452. doi:10.1371/journal.pone.0013452. PMC 2956650. PMID 20976142.

[3] Neuwinger, Hans Dieter (1996). "Cactaceae". African ethnobotany: poisons and drugs: chemistry, pharmacology, toxicology. CRC Press. p. 271. ISBN 978-3-8261-0077-2. Retrieved on June 12, 2009 through Google Book Search.

[4] Smith T. A. (1977). "Phenethylamine and related compounds in plants". Phytochemistry. 16: 9–18. doi:10.1016/0031-9422(77)83004-5.

[5] Mitchell S. D.; Firmin J. L.; Gray D. O. (1984). "Enhanced 3-methoxytyramine levels in crown gall tumours and other undifferentiated plant tissues". Biochem. J. 221: 891–5. doi:10.1042/bj2210891. PMC 1144120. PMID 6477503.

[Trace_amine_template_1-6] Broadley KJ (March 2010). "The vascular effects of trace amines and amphetamines". Pharmacology & Therapeutics. 125 (3): 363–375. doi:10.1016/j.pharmthera.2009.11.005. PMID 19948186.

[Trace_amine_template_2-7] Lindemann L, Hoener MC (May 2005). "A renaissance in trace amines inspired by a novel GPCR family". Trends in Pharmacological Sciences. 26 (5): 274–281. doi:10.1016/j.tips.2005.03.007. PMID 15860375.

[CYP2D6_tyramine-dopamine_metabolism-8] Wang X, Li J, Dong G, Yue J (February 2014). "The endogenous substrates of brain CYP2D". European Journal of Pharmacology. 724: 211–218. doi:10.1016/j.ejphar.2013.12.025. PMID 24374199.

Phenethylamines
Phenethylamines	Psychedelics: 25B-NBOMe 25C-NBOMe 25D-NBOMe 25I-NBOMe 25N-NBOMe 2C-B 2C-B-AN 2C-Bn 2C-Bu 2C-C 2C-CN 2C-CP 2C-D 2C-E 2C-EF 2C-F 2C-G 2C-G-1 2C-G-2 2C-G-3 2C-G-4 2C-G-5 2C-G-6 2C-G-N 2C-H 2C-I 2C-iP 2C-N 2C-NH2 2C-O 2C-O-4 2C-P 2C-Ph 2C-SE 2C-T 2C-T-2 2C-T-3 2C-T-4 2C-T-5 2C-T-6 2C-T-7 2C-T-8 2C-T-9 2C-T-10 2C-T-11 2C-T-12 2C-T-13 2C-T-14 2C-T-15 2C-T-16 2C-T-17 2C-T-18 2C-T-19 2C-T-20 2C-T-21 2C-T-22 2C-T-22.5 2C-T-23 2C-T-24 2C-T-25 2C-T-27 2C-T-28 2C-T-30 2C-T-31 2C-T-32 2C-T-33 2C-TFE 2C-TFM 2C-YN 2C-V Allylescaline DESOXY Escaline Isoproscaline Jimscaline Macromerine MEPEA Mescaline Metaescaline Methallylescaline Proscaline Psi-2C-T-4 TCB-2 Venlafaxine Stimulants: Phenylethanolamine Hordenine Phenethylamine α-Methylphenethylamine (amphetamine) β-Methylphenethylamine m-Methylphenethylamine N-Methylphenethylamine o-Methylphenethylamine p-Methylphenethylamine Methylphenidate Entactogens: Lophophine MDPEA MDMPEA Others: BOH DMPEA
Amphetamines	Psychedelics: 3C-BZ 3C-E 3C-P Aleph Beatrice Bromo-DragonFLY D-Deprenyl DMA DMCPA DMMDA DOB DOC DOEF DOET DOI DOM DON DOPR DOTFM Ganesha MMDA MMDA-2 Psi-DOM TMA TeMA Stimulants: 2-FA 2-FMA 3-FA 3-FMA Acridorex Alfetamine Amfecloral Amfepentorex Amphetamine (Dextroamphetamine, Levoamphetamine) Amphetaminil Benfluorex Benzphetamine Cathine Clobenzorex Dimethylamphetamine Ephedrine Etilamfetamine Fencamfamin Fencamine Fenethylline Fenfluramine (Dexfenfluramine, Levofenfluramine) Fenproporex Flucetorex Fludorex Formetorex Furfenorex Gepefrine 4-Hydroxyamphetamine Iofetamine Isopropylamphetamine Lefetamine Lisdexamfetamine Mefenorex Metaraminol Methamphetamine (Dextromethamphetamine, Levomethamphetamine) Methoxyphenamine MMA Morforex Norfenfluramine L -Norpseudoephedrine N,alpha-Diethylphenylethylamine Oxifentorex Oxilofrine Ortetamine PBA PCA Phenpromethamine PFA PFMA PIA PMA PMEA PMMA Phenylpropanolamine Pholedrine Prenylamine Propylamphetamine Pseudoephedrine Sibutramine Tiflorex Tranylcypromine Xylopropamine Zylofuramine Entactogens: 4-FA 4-FMA 4-MA 4-MMA 4-MTA 5-APB 5-APDB 5-EAPB 5-IT 5-MAPB 5-MAPDB 6-APB 6-APDB 6-Chloro-MDMA 6-EAPB 6-IT 6-MAPB 6-MAPDB EDA IAP 2,3-MDA 3,4-MDA (tenamfetamine) MDEA MDHMA MDMA (midomafetamine) MDOH Methamnetamine MMDMA Naphthylaminopropane TAP Others: 3,4-DCA Amiflamine DiFMDA Selegiline (also D -Deprenyl)
Phentermines	Stimulants: Chlorphentermine Cloforex Clortermine Etolorex Mephentermine Pentorex Phentermine Entactogens: MDPH MDMPH Others: Cericlamine
Cathinones	Stimulants: 3-FMC 4-MC 4-BMC 4-CMC 4-EMC 4-FMC 4-MEC 4-MeMABP 4-MPD Amfepramone Benzedrone Brephedrone Buphedrone Bupropion Cathinone Dimethylcathinone Ethcathinone Eutylone Hydroxybupropion Methcathinone Methedrone NEB N-Ethylhexedrone N-Ethylpentedrone Pentedrone Pentylone Radafaxine Entactogens: 3,4-DMMC 3-MMC Butylone Ethylone Methylone Methylenedioxycathinone Mephedrone
Phenylisobutylamines	Entactogens: 4-CAB 4-MAB Ariadne BDB Butylone EBDB Eutylone MBDB Stimulants: Phenylisobutylamine
Phenylalkylpyrrolidines	Stimulants: α-PBP α-PHP α-PPP α-PVP MDPBP MDPPP MDPV 4-MePBP 4-MePHP 4-MePPP MOPPP MOPVP MPBP MPHP MPPP Naphyrone PEP Prolintane Pyrovalerone
Catecholamines (and close relatives)	6-FNE 6-OHDA a-Me-DA a-Me-TRA Adrenochrome Ciladopa D -DOPA (Dextrodopa) Dimetofrine Dopamine Epinephrine Epinine Etilefrine Ethylnorepinephrine Fenclonine Ibopamine Isoprenaline Isoetarine L -DOPA (Levodopa) L -DOPS (Droxidopa) L -Phenylalanine L -Tyrosine m-Tyramine Metanephrine Metaraminol Metaterol Metirosine Methyldopa N,N-Dimethyldopamine Nordefrin (Levonordefrin) Norepinephrine Norfenefrine (m-Octopamine) Normetanephrine Orciprenaline p-Octopamine p-Tyramine Phenylephrine Synephrine
Miscellaneous	AL-LAD Amidephrine Arbutamine Cafedrine Denopamine Desvenlafaxine Diphenidine Dizocilpine Dobutamine Dopexamine Ephenidine Etafedrine ETH-LAD Famprofazone Fluorolintane Hexapradol IP-LAD Lysergic acid amide Lysergic acid 2-butyl amide Lysergic acid 2,4-dimethylazetidide Lysergic acid diethylamide Methoxamine Methoxphenidine MT-45 PARGY-LAD Phenibut PRO-LAD Pronethalol Salbutamol (Levosalbutamol) Solriamfetol Theodrenaline Thiamphenicol UWA-101

3-Methoxytyramine

Occurrence

See also

References