Jump To Section:

Identification Taxonomy Ontology Physical properties Spectra Biological properties Concentrations Links References XML

Record Information

Version

5.0

Status

Detected but not Quantified

Creation Date

2021-09-10 23:32:05 UTC

Update Date

2021-09-26 22:55:39 UTC

HMDB ID

HMDB0246517

Secondary Accession Numbers

None

Metabolite Identification

Common Name

2-Amino-4-methylpyridine

Description

4-methyl-1,2-dihydropyridin-2-imine belongs to the class of organic compounds known as aminopyridines and derivatives. These are organic heterocyclic compounds containing an amino group attached to a pyridine ring. Based on a literature review very few articles have been published on 4-methyl-1,2-dihydropyridin-2-imine. This compound has been identified in human blood as reported by (PMID: 31557052 ). 2-amino-4-methylpyridine is not a naturally occurring metabolite and is only found in those individuals exposed to this compound or its derivatives. Technically 2-Amino-4-methylpyridine is part of the human exposome. The exposome can be defined as the collection of all the exposures of an individual in a lifetime and how those exposures relate to health. An individual's exposure begins before birth and includes insults from environmental and occupational sources.

Structure

MOL 3D MOL SDF 3D SDF PDB 3D PDB SMILES InChI

View in JSmol View NMR Assignments View Stereo Labels

Synonyms

Value	Source
2-amino-4-Picoline	MeSH
VMI 20-4	MeSH
2-amino-4-Picoline nitrate	MeSH
2-amino-4-Picoline hydrochloride	MeSH
4-Methyl-2-aminopyridine	MeSH
Aminton	MeSH
2-amino-4-Picolinium	MeSH
2-Amino-4-methylpyridine	MeSH

Chemical Formula

C₆H₈N₂

Average Molecular Weight

108.1411

Monoisotopic Molecular Weight

108.068748266

IUPAC Name

4-methyl-1,2-dihydropyridin-2-imine

Traditional Name

4-methyl-1H-pyridin-2-imine

CAS Registry Number

Not Available

SMILES

CC1=CC(=N)NC=C1

InChI Identifier

InChI=1S/C6H8N2/c1-5-2-3-8-6(7)4-5/h2-4H,1H3,(H2,7,8)

InChI Key

ORLGLBZRQYOWNA-UHFFFAOYSA-N

Chemical Taxonomy

Description

Belongs to the class of organic compounds known as aminopyridines and derivatives. These are organic heterocyclic compounds containing an amino group attached to a pyridine ring.

Kingdom

Organic compounds

Super Class

Organoheterocyclic compounds

Class

Pyridines and derivatives

Sub Class

Aminopyridines and derivatives

Direct Parent

Aminopyridines and derivatives

Alternative Parents

Substituents

Methylpyridine
Aminopyridine
Imidolactam
Heteroaromatic compound
Azacycle
Organic nitrogen compound
Organopnictogen compound
Hydrocarbon derivative
Primary amine
Organonitrogen compound
Amine
Aromatic heteromonocyclic compound

Molecular Framework

Aromatic heteromonocyclic compounds

External Descriptors

Not Available

Ontology

Physiological effect

Not Available

Disposition

Biological location

Non-excretory biofluid

Biofluid or Excreta

Blood (PMID: 31557052)

Source

Exogenous

Exogenous (PMID: 31557052)

Process

Not Available

Role

Not Available

Physical Properties

State

Not Available

Experimental Molecular Properties

Property	Value	Reference
Melting Point	Not Available	Not Available
Boiling Point	Not Available	Not Available
Water Solubility	Not Available	Not Available
LogP	Not Available	Not Available

Experimental Chromatographic Properties

Not Available

Predicted Molecular Properties

Property	Value	Source
logP	0.47	ALOGPS
logP	0.38	ChemAxon
logS	-1.3	ALOGPS
pKa (Strongest Acidic)	13.81	ChemAxon
pKa (Strongest Basic)	5.55	ChemAxon
Physiological Charge	0	ChemAxon
Hydrogen Acceptor Count	2	ChemAxon
Hydrogen Donor Count	2	ChemAxon
Polar Surface Area	35.88 Å²	ChemAxon
Rotatable Bond Count	0	ChemAxon
Refractivity	44.8 m³·mol⁻¹	ChemAxon
Polarizability	11.78 Å³	ChemAxon
Number of Rings	1	ChemAxon
Bioavailability	Yes	ChemAxon
Rule of Five	Yes	ChemAxon
Ghose Filter	No	ChemAxon
Veber's Rule	Yes	ChemAxon
MDDR-like Rule	No	ChemAxon

Predicted Chromatographic Properties

Predicted Collision Cross Sections

Predictor	Adduct Type	CCS Value (Å²)	Reference
DeepCCS	[M+H]+	127.193	30932474
DeepCCS	[M-H]-	124.503	30932474
DeepCCS	[M-2H]-	160.993	30932474
DeepCCS	[M+Na]+	135.932	30932474
AllCCS	[M+H]+	120.4	32859911
AllCCS	[M+H-H2O]+	115.4	32859911
AllCCS	[M+NH4]+	125.2	32859911
AllCCS	[M+Na]+	126.5	32859911
AllCCS	[M-H]-	120.5	32859911
AllCCS	[M+Na-2H]-	123.1	32859911
AllCCS	[M+HCOO]-	126.0	32859911

Predicted Retention Times

Underivatized

Chromatographic Method	Retention Time	Reference
Predicted by Siyang on May 30, 2022	10.9056 minutes	33406817
Predicted by Siyang using ReTip algorithm on June 8, 2022	1.82 minutes	32390414
Fem_Long = Waters ACQUITY UPLC HSS T3 C18 with Water:MeOH and 0.1% Formic Acid	1358.9 seconds	40023050
Fem_Lipids = Ascentis Express C18 with (60:40 water:ACN):(90:10 IPA:ACN) and 10mM NH4COOH + 0.1% Formic Acid	387.0 seconds	40023050
Life_Old = Waters ACQUITY UPLC BEH C18 with Water:(20:80 acetone:ACN) and 0.1% Formic Acid	139.1 seconds	40023050
Life_New = RP Waters ACQUITY UPLC HSS T3 C18 with Water:(30:70 MeOH:ACN) and 0.1% Formic Acid	257.7 seconds	40023050
RIKEN = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid	206.7 seconds	40023050
Eawag_XBridgeC18 = XBridge C18 3.5u 2.1x50 mm with Water:MeOH and 0.1% Formic Acid	371.6 seconds	40023050
BfG_NTS_RP1 =Agilent Zorbax Eclipse Plus C18 (2.1 mm x 150 mm, 3.5 um) with Water:ACN and 0.1% Formic Acid	413.3 seconds	40023050
HILIC_BDD_2 = Merck SeQuant ZIC-HILIC with ACN(0.1% formic acid):water(16 mM ammonium formate)	161.4 seconds	40023050
UniToyama_Atlantis = RP Waters Atlantis T3 (2.1 x 150 mm, 5 um) with ACN:Water and 0.1% Formic Acid	902.7 seconds	40023050
BDD_C18 = Hypersil Gold 1.9µm C18 with Water:ACN and 0.1% Formic Acid	313.2 seconds	40023050
UFZ_Phenomenex = Kinetex Core-Shell C18 2.6 um, 3.0 x 100 mm, Phenomenex with Water:MeOH and 0.1% Formic Acid	1036.0 seconds	40023050
SNU_RIKEN_POS = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid	324.5 seconds	40023050
RPMMFDA = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid	303.2 seconds	40023050
MTBLS87 = Merck SeQuant ZIC-pHILIC column with ACN:Water and :ammonium carbonate	455.9 seconds	40023050
KI_GIAR_zic_HILIC_pH2_7 = Merck SeQuant ZIC-HILIC with ACN:Water and 0.1% FA	280.0 seconds	40023050
Meister zic-pHILIC pH9.3 = Merck SeQuant ZIC-pHILIC column with ACN:Water 5mM NH4Ac pH9.3 and 5mM ammonium acetate in water	110.5 seconds	40023050

Predicted Kovats Retention Indices

Underivatized

Metabolite	SMILES	Kovats RI Value	Column Type	Reference
2-Amino-4-methylpyridine	CC1=CC(=N)NC=C1	2074.6	Standard polar	33892256
2-Amino-4-methylpyridine	CC1=CC(=N)NC=C1	1184.5	Standard non polar	33892256
2-Amino-4-methylpyridine	CC1=CC(=N)NC=C1	1258.6	Semi standard non polar	33892256

Derivatized

Derivative Name / Structure	SMILES	Kovats RI Value	Column Type	Reference
2-Amino-4-methylpyridine,1TMS,isomer #1	CC1=CC(=N[Si](C)(C)C)[NH]C=C1	1187.8	Semi standard non polar	33892256
2-Amino-4-methylpyridine,1TMS,isomer #1	CC1=CC(=N[Si](C)(C)C)[NH]C=C1	1284.9	Standard non polar	33892256
2-Amino-4-methylpyridine,1TMS,isomer #1	CC1=CC(=N[Si](C)(C)C)[NH]C=C1	1743.3	Standard polar	33892256
2-Amino-4-methylpyridine,1TMS,isomer #2	CC1=CC(=N)N([Si](C)(C)C)C=C1	1341.6	Semi standard non polar	33892256
2-Amino-4-methylpyridine,1TMS,isomer #2	CC1=CC(=N)N([Si](C)(C)C)C=C1	1352.7	Standard non polar	33892256
2-Amino-4-methylpyridine,1TMS,isomer #2	CC1=CC(=N)N([Si](C)(C)C)C=C1	1778.5	Standard polar	33892256
2-Amino-4-methylpyridine,2TMS,isomer #1	CC1=CC(=N[Si](C)(C)C)N([Si](C)(C)C)C=C1	1474.2	Semi standard non polar	33892256
2-Amino-4-methylpyridine,2TMS,isomer #1	CC1=CC(=N[Si](C)(C)C)N([Si](C)(C)C)C=C1	1499.2	Standard non polar	33892256
2-Amino-4-methylpyridine,2TMS,isomer #1	CC1=CC(=N[Si](C)(C)C)N([Si](C)(C)C)C=C1	1667.6	Standard polar	33892256
2-Amino-4-methylpyridine,1TBDMS,isomer #1	CC1=CC(=N[Si](C)(C)C(C)(C)C)[NH]C=C1	1435.4	Semi standard non polar	33892256
2-Amino-4-methylpyridine,1TBDMS,isomer #1	CC1=CC(=N[Si](C)(C)C(C)(C)C)[NH]C=C1	1484.5	Standard non polar	33892256
2-Amino-4-methylpyridine,1TBDMS,isomer #1	CC1=CC(=N[Si](C)(C)C(C)(C)C)[NH]C=C1	1902.8	Standard polar	33892256
2-Amino-4-methylpyridine,1TBDMS,isomer #2	CC1=CC(=N)N([Si](C)(C)C(C)(C)C)C=C1	1533.0	Semi standard non polar	33892256
2-Amino-4-methylpyridine,1TBDMS,isomer #2	CC1=CC(=N)N([Si](C)(C)C(C)(C)C)C=C1	1561.5	Standard non polar	33892256
2-Amino-4-methylpyridine,1TBDMS,isomer #2	CC1=CC(=N)N([Si](C)(C)C(C)(C)C)C=C1	1900.4	Standard polar	33892256
2-Amino-4-methylpyridine,2TBDMS,isomer #1	CC1=CC(=N[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)C=C1	1837.6	Semi standard non polar	33892256
2-Amino-4-methylpyridine,2TBDMS,isomer #1	CC1=CC(=N[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)C=C1	1891.7	Standard non polar	33892256
2-Amino-4-methylpyridine,2TBDMS,isomer #1	CC1=CC(=N[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)C=C1	1889.4	Standard polar	33892256

Spectra

GC-MS Spectra

Spectrum Type	Description	Splash Key	Deposition Date	Source	View
Predicted GC-MS	Predicted GC-MS Spectrum - 2-Amino-4-methylpyridine GC-MS (Non-derivatized) - 70eV, Positive	splash10-0a4i-6900000000-af61d12b082559bee698	2021-09-23	Wishart Lab	View Spectrum
Predicted GC-MS	Predicted GC-MS Spectrum - 2-Amino-4-methylpyridine GC-MS (Non-derivatized) - 70eV, Positive	Not Available	2021-10-12	Wishart Lab	View Spectrum

MS/MS Spectra

Spectrum Type	Description	Splash Key	Deposition Date	Source	View
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 2-Amino-4-methylpyridine 10V, Positive-QTOF	splash10-0a4i-0900000000-146d87faf4475145387b	2016-08-01	Wishart Lab	View Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 2-Amino-4-methylpyridine 20V, Positive-QTOF	splash10-0a4i-4900000000-61290e356b7ece5a6041	2016-08-01	Wishart Lab	View Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 2-Amino-4-methylpyridine 40V, Positive-QTOF	splash10-052f-9200000000-bd35eef486551e410b11	2016-08-01	Wishart Lab	View Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 2-Amino-4-methylpyridine 10V, Negative-QTOF	splash10-0a4i-0900000000-fedc375a47b37a5dc447	2016-08-03	Wishart Lab	View Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 2-Amino-4-methylpyridine 20V, Negative-QTOF	splash10-0a4i-1900000000-e9d3b5ce238fb81c50e7	2016-08-03	Wishart Lab	View Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 2-Amino-4-methylpyridine 40V, Negative-QTOF	splash10-052f-9200000000-7ec4ae44f24eb969fcd5	2016-08-03	Wishart Lab	View Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 2-Amino-4-methylpyridine 10V, Positive-QTOF	splash10-0a4i-0900000000-0f7e6606314edbd6492a	2021-10-12	Wishart Lab	View Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 2-Amino-4-methylpyridine 20V, Positive-QTOF	splash10-0a4i-9800000000-a15df73b802a780ddb34	2021-10-12	Wishart Lab	View Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 2-Amino-4-methylpyridine 40V, Positive-QTOF	splash10-00mo-9000000000-a8bee4b5192598885814	2021-10-12	Wishart Lab	View Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 2-Amino-4-methylpyridine 10V, Negative-QTOF	splash10-0a4i-0900000000-1d4d8b4513a018558199	2021-10-12	Wishart Lab	View Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 2-Amino-4-methylpyridine 20V, Negative-QTOF	splash10-0a4i-1900000000-e5675bd75b724dee19ef	2021-10-12	Wishart Lab	View Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 2-Amino-4-methylpyridine 40V, Negative-QTOF	splash10-03di-9000000000-32039c1bbc11cad4a36e	2021-10-12	Wishart Lab	View Spectrum

NMR Spectra

Spectrum Type	Description	Deposition Date	Source	View
Predicted 1D NMR	¹³C NMR Spectrum (1D, 100 MHz, D₂O, predicted)	2021-10-13	Wishart Lab	View Spectrum
Predicted 1D NMR	¹H NMR Spectrum (1D, 100 MHz, D₂O, predicted)	2021-10-13	Wishart Lab	View Spectrum
Predicted 1D NMR	¹H NMR Spectrum (1D, 1000 MHz, D₂O, predicted)	2021-10-13	Wishart Lab	View Spectrum
Predicted 1D NMR	¹³C NMR Spectrum (1D, 1000 MHz, D₂O, predicted)	2021-10-13	Wishart Lab	View Spectrum
Predicted 1D NMR	¹H NMR Spectrum (1D, 200 MHz, D₂O, predicted)	2021-10-13	Wishart Lab	View Spectrum
Predicted 1D NMR	¹³C NMR Spectrum (1D, 200 MHz, D₂O, predicted)	2021-10-13	Wishart Lab	View Spectrum
Predicted 1D NMR	¹³C NMR Spectrum (1D, 300 MHz, D₂O, predicted)	2021-10-13	Wishart Lab	View Spectrum
Predicted 1D NMR	¹H NMR Spectrum (1D, 300 MHz, D₂O, predicted)	2021-10-13	Wishart Lab	View Spectrum
Predicted 1D NMR	¹H NMR Spectrum (1D, 400 MHz, D₂O, predicted)	2021-10-13	Wishart Lab	View Spectrum
Predicted 1D NMR	¹³C NMR Spectrum (1D, 400 MHz, D₂O, predicted)	2021-10-13	Wishart Lab	View Spectrum
Predicted 1D NMR	¹³C NMR Spectrum (1D, 500 MHz, D₂O, predicted)	2021-10-13	Wishart Lab	View Spectrum
Predicted 1D NMR	¹H NMR Spectrum (1D, 500 MHz, D₂O, predicted)	2021-10-13	Wishart Lab	View Spectrum
Predicted 1D NMR	¹³C NMR Spectrum (1D, 600 MHz, D₂O, predicted)	2021-10-13	Wishart Lab	View Spectrum
Predicted 1D NMR	¹H NMR Spectrum (1D, 600 MHz, D₂O, predicted)	2021-10-13	Wishart Lab	View Spectrum
Predicted 1D NMR	¹H NMR Spectrum (1D, 700 MHz, D₂O, predicted)	2021-10-13	Wishart Lab	View Spectrum
Predicted 1D NMR	¹³C NMR Spectrum (1D, 700 MHz, D₂O, predicted)	2021-10-13	Wishart Lab	View Spectrum
Predicted 1D NMR	¹³C NMR Spectrum (1D, 800 MHz, D₂O, predicted)	2021-10-13	Wishart Lab	View Spectrum
Predicted 1D NMR	¹H NMR Spectrum (1D, 800 MHz, D₂O, predicted)	2021-10-13	Wishart Lab	View Spectrum
Predicted 1D NMR	¹³C NMR Spectrum (1D, 900 MHz, D₂O, predicted)	2021-10-13	Wishart Lab	View Spectrum
Predicted 1D NMR	¹H NMR Spectrum (1D, 900 MHz, D₂O, predicted)	2021-10-13	Wishart Lab	View Spectrum

Biological Properties

Cellular Locations

Not Available

Biospecimen Locations

Blood

Tissue Locations

Not Available

Pathways

Not Available

Name	SMPDB/PathBank	KEGG

Normal Concentrations

Biospecimen	Status	Value	Age	Sex	Condition	Reference	Details
Blood	Detected but not Quantified	Not Quantified	Not Specified	Not Specified	Normal	31557052	details

Abnormal Concentrations

Not Available

Associated Disorders and Diseases

Disease References

None

Associated OMIM IDs

None

External Links

DrugBank ID

Not Available

Phenol Explorer Compound ID

Not Available

FooDB ID

Not Available

KNApSAcK ID

C00042143

Chemspider ID

1479

KEGG Compound ID

Not Available

BioCyc ID

Not Available

BiGG ID

Not Available

Wikipedia Link

Not Available

METLIN ID

Not Available

PubChem Compound

Not Available

PDB ID

Not Available

ChEBI ID

Not Available

Food Biomarker Ontology

Not Available

VMH ID

Not Available

MarkerDB ID

Not Available

Good Scents ID

Not Available

References

Synthesis Reference

Not Available

Material Safety Data Sheet (MSDS)

Not Available

General References

Barupal DK, Fiehn O: Generating the Blood Exposome Database Using a Comprehensive Text Mining and Database Fusion Approach. Environ Health Perspect. 2019 Sep;127(9):97008. doi: 10.1289/EHP4713. Epub 2019 Sep 26. [PubMed:31557052 ]

Showing metabocard for 2-Amino-4-methylpyridine (HMDB0246517)

MOL for HMDB0246517 (2-Amino-4-methylpyridine)

3D MOL for HMDB0246517 (2-Amino-4-methylpyridine)

3D SDF for HMDB0246517 (2-Amino-4-methylpyridine)

3D-SDF for HMDB0246517 (2-Amino-4-methylpyridine)

PDB for HMDB0246517 (2-Amino-4-methylpyridine)

3D PDB for HMDB0246517 (2-Amino-4-methylpyridine)

SMILES for HMDB0246517 (2-Amino-4-methylpyridine)

INCHI for HMDB0246517 (2-Amino-4-methylpyridine)

Structure for HMDB0246517 (2-Amino-4-methylpyridine)

3D Structure for HMDB0246517 (2-Amino-4-methylpyridine)

Predicted Collision Cross Sections

Predicted Retention Times

Underivatized

Predicted Kovats Retention Indices

Underivatized

Derivatized

GC-MS Spectra

MS/MS Spectra

NMR Spectra