ContaminantDB: O6-Methylguanine

Identification Taxonomy Biological Properties Physical Properties Toxicity Profile Spectra Concentrations Links References XML

Record Information

Version

1.0

Creation Date

2016-05-22 07:08:42 UTC

Update Date

2026-04-03 17:15:16 UTC

Accession Number

CHEM020482

Identification

Common Name

O6-Methylguanine

Class

Small Molecule

Description

A methylguanine in which the methyl group is positioned on the oxygen at position 6. Formed in DNA by alkylation of the oxygen atom of guanine, most often by N-nitroso compounds and sometimes due to methylation by other compounds such as endogenous S-adenosylmethionine, it base-pairs to thymine rather than cytidine, causing a G:C to A:T transition in DNA.

Contaminant Sources

ToxCast & Tox21 Chemicals

Contaminant Type

Not Available

Chemical Structure

MOL SDF PDB SMILES InChI

Synonyms

Value	Source
6-Methoxy-1H-purine-2-amine	ChEBI
6-Methoxyguanine	ChEBI
O-(6)-Methylguanine	ChEBI
O(6)-Methylguanine	ChEBI
O6-Methylguanine	HMDB
6-Methylguanine	HMDB
2-amino-6-Methoxypurine	ChEBI

Chemical Formula

C₆H₇N₅O

Average Molecular Mass

165.153 g/mol

Monoisotopic Mass

165.065 g/mol

CAS Registry Number

20535-83-5

IUPAC Name

6-methoxy-3,9-dihydro-2H-purin-2-imine

Traditional Name

6-O-methylguanine

SMILES

COC1=NC(=N)NC2=C1N=CN2

InChI Identifier

InChI=1S/C6H7N5O/c1-12-5-3-4(9-2-8-3)10-6(7)11-5/h2H,1H3,(H3,7,8,9,10,11)

InChI Key

BXJHWYVXLGLDMZ-UHFFFAOYSA-N

Chemical Taxonomy

Description

belongs to the class of organic compounds known as hypoxanthines. Hypoxanthines are compounds containing the purine derivative 1H-purin-6(9H)-one. Purine is a bicyclic aromatic compound made up of a pyrimidine ring fused to an imidazole ring.

Kingdom

Organic compounds

Super Class

Organoheterocyclic compounds

Class

Imidazopyrimidines

Sub Class

Purines and purine derivatives

Direct Parent

Hypoxanthines

Alternative Parents

Substituents

Hypoxanthine
Alkyl aryl ether
Aminopyrimidine
Pyrimidine
Azole
Imidazole
Heteroaromatic compound
Ether
Azacycle
Primary amine
Organooxygen compound
Organonitrogen compound
Amine
Organopnictogen compound
Organic nitrogen compound
Hydrocarbon derivative
Organic oxygen compound
Aromatic heteropolycyclic compound

Molecular Framework

Aromatic heteropolycyclic compounds

External Descriptors

methylguanine (CHEBI:20689 )

Biological Properties

Status

Detected and Not Quantified

Origin

Not Available

Cellular Locations

Not Available

Biofluid Locations

Not Available

Tissue Locations

Not Available

Pathways

Not Available

Applications

Not Available

Biological Roles

Not Available

Chemical Roles

Not Available

Physical Properties

State

Not Available

Appearance

Not Available

Experimental Properties

Property	Value
Melting Point	Not Available
Boiling Point	Not Available
Solubility	Not Available

Predicted Properties

Property	Value	Source
Water Solubility	0.5 g/L	ALOGPS
logP	-0.56	ALOGPS
logP	-0.34	ChemAxon
logS	-2.5	ALOGPS
pKa (Strongest Acidic)	12.88	ChemAxon
pKa (Strongest Basic)	5.26	ChemAxon
Physiological Charge	0	ChemAxon
Hydrogen Acceptor Count	4	ChemAxon
Hydrogen Donor Count	3	ChemAxon
Polar Surface Area	86.15 Å²	ChemAxon
Rotatable Bond Count	1	ChemAxon
Refractivity	53.36 m³·mol⁻¹	ChemAxon
Polarizability	15.4 Å³	ChemAxon
Number of Rings	2	ChemAxon
Bioavailability	1	ChemAxon
Rule of Five	Yes	ChemAxon
Ghose Filter	No	ChemAxon
Veber's Rule	No	ChemAxon
MDDR-like Rule	No	ChemAxon

Spectra

Spectrum Type	Description	Splash Key	View
Predicted GC-MS	Predicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, Positive	splash10-00m0-2900000000-398edee1515b94d58cdb	Spectrum
Predicted GC-MS	Predicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, Positive	Not Available	Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 10V, Positive	splash10-014i-0900000000-f5ef9704d5e397cd7449	Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 20V, Positive	splash10-014i-0900000000-dcd4b3406016ec545ecf	Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 40V, Positive	splash10-053r-2900000000-ecdc42de6a212c28bdb0	Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 10V, Negative	splash10-03di-0900000000-44b8935cd0a14254518b	Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 20V, Negative	splash10-03e9-0900000000-2dc830f7eebc50ea3071	Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 40V, Negative	splash10-0a6u-9100000000-fef04240513f89db1ceb	Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 10V, Positive	splash10-014i-0900000000-7f20cf9333bbb1eb98e1	Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 20V, Positive	splash10-014i-0900000000-20ce136b99632e9d59a8	Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 40V, Positive	splash10-0a59-9100000000-e0df9e6b94989688a4d0	Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 10V, Negative	splash10-03di-0900000000-11e5406fb2e0acd600c0	Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 20V, Negative	splash10-03e9-1900000000-992be0859a60c1e24588	Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 40V, Negative	splash10-066r-9300000000-8aa422a3ae4b12fd0736	Spectrum
1D NMR	13C NMR Spectrum	Not Available	Spectrum
1D NMR	1H NMR Spectrum	Not Available	Spectrum
1D NMR	13C NMR Spectrum	Not Available	Spectrum
1D NMR	1H NMR Spectrum	Not Available	Spectrum
1D NMR	13C NMR Spectrum	Not Available	Spectrum
1D NMR	1H NMR Spectrum	Not Available	Spectrum
1D NMR	13C NMR Spectrum	Not Available	Spectrum
1D NMR	1H NMR Spectrum	Not Available	Spectrum
1D NMR	13C NMR Spectrum	Not Available	Spectrum
1D NMR	1H NMR Spectrum	Not Available	Spectrum
1D NMR	13C NMR Spectrum	Not Available	Spectrum
1D NMR	1H NMR Spectrum	Not Available	Spectrum
1D NMR	13C NMR Spectrum	Not Available	Spectrum
1D NMR	1H NMR Spectrum	Not Available	Spectrum
1D NMR	13C NMR Spectrum	Not Available	Spectrum
1D NMR	1H NMR Spectrum	Not Available	Spectrum
1D NMR	13C NMR Spectrum	Not Available	Spectrum
1D NMR	1H NMR Spectrum	Not Available	Spectrum
1D NMR	13C NMR Spectrum	Not Available	Spectrum
1D NMR	1H NMR Spectrum	Not Available	Spectrum