Record Information
Version1.0
Creation date2010-04-08 22:06:09 UTC
Update date2019-11-26 02:59:53 UTC
Primary IDFDB004234
Secondary Accession NumbersNot Available
Chemical Information
FooDB NameMelatonin
DescriptionMelatonin, also known as circadin or melatol, belongs to the class of organic compounds known as 3-alkylindoles. 3-alkylindoles are compounds containing an indole moiety that carries an alkyl chain at the 3-position. Melatonin is an extremely weak basic (essentially neutral) compound (based on its pKa). Melatonin exists in all living organisms, ranging from bacteria to humans. Melatonin is found, on average, in the highest concentration within corns and milk (cow). Melatonin has also been detected, but not quantified in, several different foods, such as cornmints, sacred lotus, pomes, burdocks, and giant butterburs. This could make melatonin a potential biomarker for the consumption of these foods. Melatonin is a potentially toxic compound.
CAS Number73-31-4
Structure
Thumb
Synonyms
SynonymSource
5-Methoxy-N-acetyltryptamineChEBI
MelatonineChEBI
N-[2-(5-Methoxyindol-3-yl)ethyl]acetamideChEBI
N-Acetyl-5-methoxytryptamineChEBI
MelatoninaKegg
CircadinHMDB
MelatolHMDB
Melatonin (synth.) standard-gradeHMDB
Melatonin (synth.) ultra-pureHMDB
MelovineHMDB
MT6HMDB
N-(2-(5-Methoxy-1H-indol-3-yl)ethyl)acetamideHMDB
N-(2-(5-Methoxyindol-3-yl)ethyl)-acetamideHMDB
N-(2-(5-Methoxyindol-3-yl)ethyl)acetamideHMDB
N-Acetyl-5-methoxy-tryptamineHMDB
N-Acetyl-5-methoxy-tryptamine melatonineHMDB
N-[2-(5-Methoxy-1H-indol-3-yl)ethyl)acetamideHMDB
N-[2-(5-Methoxy-1H-indol-3-yl)ethyl]-acetamideHMDB
N-[2-(5-Methoxy-1H-indol-3-yl)ethyl]acetamideHMDB
N-[2-(5-Methoxyindol-3-yl)ethyl]-acetamideHMDB
RegulinHMDB
{N-[2-(5-methoxy-1H-indol-3-yl)ethyl]-} acetamideHMDB
{N-[2-(5-methoxyindol-3-yl)ethyl]-} acetamideHMDB
3-(2-Acetamidoethyl)-5-methoxyindoleHMDB
MelatoninHMDB
Acetamide, N-(2-(5-methoxy-1H-indol-3-yl)ethyl)- (9CI)biospider
Acetamide, N-[2-(5-methoxyindol-3-yl)ethyl]- (6CI,8CI)biospider
Melapurebiospider
N-[2-(5-Methoxy-1H-indol-3-yl)-ethyl]-acetamidebiospider
Predicted Properties
PropertyValueSource
Water Solubility0.14 g/LALOGPS
logP1.42ALOGPS
logP1.15ChemAxon
logS-3.2ALOGPS
pKa (Strongest Acidic)15.8ChemAxon
pKa (Strongest Basic)-1.6ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count2ChemAxon
Hydrogen Donor Count2ChemAxon
Polar Surface Area54.12 ŲChemAxon
Rotatable Bond Count4ChemAxon
Refractivity66.28 m³·mol⁻¹ChemAxon
Polarizability25.65 ųChemAxon
Number of Rings2ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Chemical FormulaC13H16N2O2
IUPAC nameN-[2-(5-methoxy-1H-indol-3-yl)ethyl]acetamide
InChI IdentifierInChI=1S/C13H16N2O2/c1-9(16)14-6-5-10-8-15-13-4-3-11(17-2)7-12(10)13/h3-4,7-8,15H,5-6H2,1-2H3,(H,14,16)
InChI KeyDRLFMBDRBRZALE-UHFFFAOYSA-N
Isomeric SMILESCOC1=CC=C2NC=C(CCNC(C)=O)C2=C1
Average Molecular Weight232.2783
Monoisotopic Molecular Weight232.121177766
Classification
Description Belongs to the class of organic compounds known as 3-alkylindoles. 3-Alkylindoles are compounds containing an indole moiety that carries an alkyl chain at the 3-position.
KingdomOrganic compounds
Super ClassOrganoheterocyclic compounds
ClassIndoles and derivatives
Sub ClassIndoles
Direct Parent3-alkylindoles
Alternative Parents
Substituents
  • 3-alkylindole
  • Anisole
  • Alkyl aryl ether
  • Substituted pyrrole
  • Benzenoid
  • Pyrrole
  • Heteroaromatic compound
  • Propargyl-type 1,3-dipolar organic compound
  • Ether
  • Carboximidic acid derivative
  • Carboximidic acid
  • Organic 1,3-dipolar compound
  • Azacycle
  • Organic oxygen compound
  • Hydrocarbon derivative
  • Organopnictogen compound
  • Organic nitrogen compound
  • Organooxygen compound
  • Organonitrogen compound
  • Aromatic heteropolycyclic compound
Molecular FrameworkAromatic heteropolycyclic compounds
External Descriptors
Ontology
Physiological effect

Health effect:

Disposition

Route of exposure:

Source:

Biological location:

Process

Naturally occurring process:

Role

Biological role:

Industrial application:

Physico-Chemical Properties
Physico-Chemical Properties - Experimental
PropertyValueReference
Physical stateSolid
Physical DescriptionNot Available
Mass CompositionNot Available
Melting Point117 oC
Boiling PointNot Available
Experimental Water SolubilityNot Available
Experimental logPNot Available
Experimental pKaNot Available
Isoelectric pointNot Available
Charge0
Optical RotationNot Available
Spectroscopic UV DataNot Available
DensityNot Available
Refractive IndexNot Available
Spectra
Spectra
EI-MS/GC-MS
TypeDescriptionSplash KeyView
EI-MSMass Spectrum (Electron Ionization)splash10-03k9-1900000000-45ee4fdc7acdb33dad3b2014-09-20View Spectrum
GC-MSMelatonin, non-derivatized, GC-MS Spectrumsplash10-001i-0490000000-aa93967315af900a76ceSpectrum
GC-MSMelatonin, non-derivatized, GC-MS Spectrumsplash10-03k9-0900000000-a15ee6def3f8d75b1231Spectrum
GC-MSMelatonin, non-derivatized, GC-MS Spectrumsplash10-001j-0490000000-94ef1be9ab930060778aSpectrum
GC-MSMelatonin, 2 TMS, GC-MS Spectrumsplash10-001i-1490000000-03e24298c7bd1ed4066aSpectrum
GC-MSMelatonin, non-derivatized, GC-MS Spectrumsplash10-001i-1490000000-03e24298c7bd1ed4066aSpectrum
GC-MSMelatonin, non-derivatized, GC-MS Spectrumsplash10-001j-0590000000-63d5e32dd5f7877a4402Spectrum
GC-MSMelatonin, non-derivatized, GC-MS Spectrumsplash10-001i-0590000000-52b3a733f8b49582d3fbSpectrum
GC-MSMelatonin, non-derivatized, GC-MS Spectrumsplash10-0229-1900000000-d81c6f617bc486066136Spectrum
Predicted GC-MSMelatonin, non-derivatized, Predicted GC-MS Spectrum - 70eV, Positivesplash10-0076-4920000000-a8d9d614e9f8769a1359Spectrum
Predicted GC-MSMelatonin, non-derivatized, Predicted GC-MS Spectrum - 70eV, PositiveNot AvailableSpectrum
Predicted GC-MSMelatonin, non-derivatized, Predicted GC-MS Spectrum - 70eV, PositiveNot AvailableSpectrum
MS/MS
TypeDescriptionSplash KeyView
MS/MSLC-MS/MS Spectrum - Quattro_QQQ 10V, Positive (Annotated)splash10-00di-0920000000-f90ec9b77e1a245e35a82012-07-24View Spectrum
MS/MSLC-MS/MS Spectrum - Quattro_QQQ 25V, Positive (Annotated)splash10-05fr-0900000000-49e4482c65e82ac64b662012-07-24View Spectrum
MS/MSLC-MS/MS Spectrum - Quattro_QQQ 40V, Positive (Annotated)splash10-003r-0900000000-8a4ae0fd610cca992d742012-07-24View Spectrum
MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 20V, Negativesplash10-0159-0090000000-939a1caf5760c0ba189c2012-08-31View Spectrum
MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 30V, Negativesplash10-0006-0930000000-9e6fcea2c634ac9d85a02012-08-31View Spectrum
MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 40V, Negativesplash10-0006-0900000000-ddd29e731a7de56c18082012-08-31View Spectrum
MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 50V, Negativesplash10-0006-0900000000-34b4fb52810a15ea5bd62012-08-31View Spectrum
MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 10V, Negativesplash10-001i-0090000000-5ca2df63ec2baefdae8c2012-08-31View Spectrum
MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 10V, Positivesplash10-001i-0190000000-5bae6e63e9b40e60e0a42012-08-31View Spectrum
MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 20V, Positivesplash10-00di-0900000000-529bf6d5c2091993f8652012-08-31View Spectrum
MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 30V, Positivesplash10-00di-0900000000-158a60fe696120b23b412012-08-31View Spectrum
MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 40V, Positivesplash10-0a5c-0900000000-5e86b2de659ce47762c02012-08-31View Spectrum
MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 50V, Positivesplash10-001i-0900000000-881c0d57239d56c46f2d2012-08-31View Spectrum
MS/MSLC-MS/MS Spectrum - LC-ESI-IT (LC/MSD Trap XCT, Agilent Technologies) , Positivesplash10-00di-0910000000-f256f78adbcbeb2464de2012-08-31View Spectrum
MS/MSLC-MS/MS Spectrum - LC-ESI-IT (LC/MSD Trap XCT, Agilent Technologies) , Positivesplash10-0a4i-0900000000-bd15d952a2fc6c5cbb232012-08-31View Spectrum
MS/MSLC-MS/MS Spectrum - DI-ESI-qTof , Positivesplash10-05fr-0900000000-7acf9405f4beeb34566c2017-09-14View Spectrum
MS/MSLC-MS/MS Spectrum - DI-ESI-qTof , Positivesplash10-00di-0900000000-13245183cd8c8cd511c32017-09-14View Spectrum
MS/MSLC-MS/MS Spectrum - LC-ESI-qTof , Positivesplash10-05ai-2900000000-07b3d32f002dba733c102017-09-14View Spectrum
MS/MSLC-MS/MS Spectrum - LC-ESI-QQ , negativesplash10-0159-0090000000-939a1caf5760c0ba189c2017-09-14View Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-0019-0950000000-3561167f9cf6abf874652017-07-25View Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-00dr-0900000000-7c590c12649f6abfac962017-07-25View Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-006x-1900000000-6fc07c212072dc15cda12017-07-25View Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-001i-1390000000-afe87f80bc60da102bf62017-07-26View Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-0019-3940000000-44812f1a2c7f6216bd232017-07-26View Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-052f-9300000000-995e110e7943eff538ad2017-07-26View Spectrum
NMR
TypeDescriptionView
1D NMR1H NMR Spectrum (1D, 500 MHz, H2O, experimental)Spectrum
1D NMR1H NMR Spectrum (1D, 90 MHz, CDCl3, experimental)Spectrum
1D NMR13C NMR Spectrum (1D, 22.53 MHz, CDCl3, experimental)Spectrum
2D NMR[1H, 13C]-HSQC NMR Spectrum (2D, 600 MHz, H2O, experimental)Spectrum
ChemSpider ID872
ChEMBL IDCHEMBL45
KEGG Compound IDC01598
Pubchem Compound ID896
Pubchem Substance IDNot Available
ChEBI ID16796
Phenol-Explorer IDNot Available
DrugBank IDDB01065
HMDB IDHMDB01389
CRC / DFC (Dictionary of Food Compounds) IDNot Available
EAFUS IDNot Available
Dr. Duke IDMELATONIN
BIGG ID37965
KNApSAcK IDNot Available
HET IDML1
Food Biomarker OntologyNot Available
VMH IDNot Available
Flavornet IDNot Available
GoodScent IDNot Available
SuperScent IDNot Available
Wikipedia IDMelatonin
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
AnaphrodisiacAn agent that reduces or suppresses sexual desire, used therapeutically to manage hypersexuality, sex addiction, or paraphilias, and in treating conditions like priapism or excessive sexual arousal.DUKE
Anti-aggregantAn agent that prevents platelet aggregation, reducing blood clot formation. Its biological role is to inhibit platelet activation, and its therapeutic applications include preventing thrombosis and stroke. Key medical uses include treating cardiovascular diseases, such as myocardial infarction and atrial fibrillation, and managing conditions that increase the risk of blood clots.DUKE
Anti convulsant52217 An agent that reduces or prevents seizures, commonly used in managing epilepsy, neuropathic pain, and mood disorders, by stabilizing abnormal electrical activity in the brain.DUKE
Anti depressant52217 An agent that regulates mood, reducing symptoms of depression and anxiety by altering neurotransmitter levels in the brain, commonly used in managing depression, anxiety disorders, and other mood disorders.DUKE
Anti gonadotrophicAn agent that inhibits gonadotropin production or activity, regulating reproductive hormone secretion. It has therapeutic applications in managing conditions like precocious puberty, hormone-sensitive cancers, and infertility, with key medical uses including contraception and treatment of endometriosis.DUKE
Anti-insomniac52217 An agent that promotes sleep, reducing insomnia symptoms. It regulates the body's sleep-wake cycle, commonly used in managing sleep disorders, such as chronic insomnia, and improving overall sleep quality.DUKE
Anti-oxidant22586 An agent that neutralizes free radicals, reducing oxidative stress and cell damage. Its biological role involves protecting cells from harm, and it has therapeutic applications in managing chronic diseases, such as cancer, diabetes, and neurodegenerative disorders, with key medical uses including anti-aging, anti-inflammatory, and cardio protective effects.DUKE
Anti radicularAn agent that relieves inflammation or irritation of the nerve root of a tooth, reducing pain and discomfort. Its biological role is to target and alleviate radicular pain, with therapeutic applications in endodontics and key medical uses in root canal treatments and tooth sensitivity management.DUKE
Anti-thyreotropicAn antibody that inhibits thyrotropin, regulating thyroid hormone production. It has therapeutic applications in managing thyroid disorders, such as hyperthyroidism, and key medical uses include treating conditions like Graves' disease.DUKE
AphrodisiacA substance that stimulates sexual desire, playing a biological role in enhancing libido. It has therapeutic applications in treating sexual dysfunction and key medical uses in managing conditions such as erectile dysfunction and low sex drive.DUKE
Contraceptive52217 An agent that prevents pregnancy by inhibiting ovulation, fertilization, or implantation, used to control birth rates, manage menstrual disorders, and reduce the risk of sexually transmitted infections, commonly applied in various forms such as pills, injections, and barrier methods.DUKE
Cyclooxygenase-2 inhibitor50629 An agent that blocks the activity of cyclooxygenase-2 (COX-2), reducing inflammation and pain. Therapeutically, it is used to manage conditions such as arthritis, menstrual cramps, and other inflammatory disorders, providing relief from symptoms with reduced gastrointestinal side effects compared to non-selective NSAIDs.DUKE
Cyclooxygenase inhibitor35544 An agent that blocks the activity of cyclooxygenase enzymes, reducing inflammation and pain. Therapeutically, it is used to treat conditions such as arthritis, headaches, and menstrual cramps, by decreasing prostaglandin production, a key mediator of inflammation.DUKE
DepressantAn agent that lowers neurotransmission levels, reducing arousal or stimulation in the brain, used therapeutically to treat anxiety, insomnia, and seizures, and medically to induce sedation and relieve symptoms of certain conditions.DUKE
GABA nergic51374 A neurotransmitter regulator that enhances GABA (gamma-aminobutyric acid) activity, promoting relaxation and reducing anxiety. Therapeutically, it's used as an anxiolytic, anticonvulsant, and muscle relaxant, commonly applied in managing anxiety disorders, epilepsy, and insomnia.DUKE
GonadotrophicA hormone-stimulating agent that regulates reproductive functions, promoting gonadal growth and development. Therapeutically, it is used to treat infertility, hypogonadism, and menstrual disorders, stimulating the production of sex hormones such as estrogen and testosterone.DUKE
HypnoticAn agent that induces sleep, used to treat insomnia and facilitate surgical anesthesia, playing a key role in regulating sleep patterns and providing therapeutic relief for sleep disorders.DUKE
HypocholesterolemicAn agent that lowers cholesterol levels in the blood, playing a crucial role in preventing cardiovascular disease. Therapeutically, it is used to manage hyperlipidemia and reduce the risk of heart disease, with key medical applications including the treatment of high cholesterol, atherosclerosis, and coronary artery disease.DUKE
HypothermicA condition of abnormally low body temperature, playing a biological role in reducing metabolic rate and oxygen demand. Therapeutically, it has applications in neuroprotection, cardiac surgery, and trauma care. Key medical uses include treating heatstroke, cardiac arrest, and brain injuries, as well as preserving organs for transplantation.DUKE
Immunostimulant50847 An agent that stimulates the immune system, enhancing its response to infections and diseases. Therapeutically, it boosts the body's natural defenses, commonly used to treat immunodeficiency disorders, prevent infections, and support cancer treatment, as well as manage chronic conditions like hepatitis and HIV.DUKE
ProgesteronigenicAn agent that stimulates progesterone production, regulating menstrual cycles, pregnancy, and embryogenesis. Therapeutically, it's used to treat menstrual disorders, infertility, and pregnancy-related issues, such as preventing miscarriage and supporting embryonic development.DUKE
Serotoninergic48278 An agent that modulates serotonin activity, regulating mood, appetite, and sleep. It has therapeutic applications in treating depression, anxiety, and mood disorders, with key medical uses including antidepressants, anxiolytics, and anti-migraine medications.DUKE
ThyrotropicAn agent stimulating or regulating the thyroid gland's secretory activity, playing a crucial role in hormone production. Therapeutically, it is used to manage thyroid disorders, such as hypothyroidism, and certain types of cancer, including thyroid cancer. Key medical uses include diagnosing and treating thyroid conditions, and regulating metabolism.DUKE
Hormone24621 A chemical messenger produced by glands, regulating various bodily functions such as growth, metabolism, and reproductive processes. Therapeutically, hormones are used to treat hormonal imbalances, menopausal symptoms, and certain cancers, as well as to regulate fertility and manage endocrine disorders, including diabetes and thyroid conditions.CHEBI
Enzymes
NameGene NameUniProt ID
Estrogen receptorESR1P03372
Nuclear receptor ROR-betaRORBQ92753
Pathways
NameSMPDB LinkKEGG Link
Tryptophan MetabolismSMP00063 map00380
MetabolismNot Available
BiosynthesisNot Available
Organoleptic Properties
FlavoursNot Available
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).