ContaminantDB: Barbituric acid

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

Record Information

Version

1.0

Creation Date

2016-05-19 04:15:14 UTC

Update Date

2026-04-17 18:20:26 UTC

Accession Number

CHEM013601

Identification

Common Name

Barbituric acid

Class

Small Molecule

Description

A barbiturate, the structure of which is that of perhydropyrimidine substituted at C-2, -4 and -6 by oxo groups. Barbituric acid is the parent compound of barbiturate drugs, although it is not itself pharmacologically active.

Contaminant Sources

HPV EPA Chemicals
STOFF IDENT Compounds
ToxCast & Tox21 Chemicals

Contaminant Type

Not Available

Chemical Structure

MOL SDF PDB SMILES InChI

Synonyms

Value	Source
2,4,6(1H,3H,5H)-Pyrimidinetrione	ChEBI
Barbitursaeure	ChEBI
Malonylharnstoff	ChEBI
Malonylurea	ChEBI
Barbitate	Generator
Barbitic acid	Generator
2,4,6(1H,3H,5H)-Pyrimidinetrione (acd/name 4.0)	HMDB
2,4,6-(1H,3H,5H)-Pyrimidinetrione	HMDB
2,4,6-Pyrimidinetriol	HMDB
2,4,6-Pyrimidinetrione(1H,3H,5H)	HMDB
2,4,6-Trihydroxypyrimidine	HMDB
2,4,6-Trioxohexahydropyrimidine	HMDB
6-Hydroxyuracil	HMDB
Barbiturate	HMDB
Barbitursaure	HMDB
N,N'-(1,3-dioxo-1,3-propanediyl)-urea	HMDB
NN'-(1,3-Dioxo-1,3-propanediyl)-urea	HMDB
Pyrimidine-2,4,6(1H,3H,5H)-trione	HMDB
Pyrimidinetrione	HMDB
Barbituric acid, monosodium salt	HMDB
Sodium barbiturate	HMDB

Chemical Formula

C₄H₄N₂O₃

Average Molecular Mass

128.086 g/mol

Monoisotopic Mass

128.022 g/mol

CAS Registry Number

67-52-7

IUPAC Name

4,6-dihydroxy-2,5-dihydropyrimidin-2-one

Traditional Name

barbituric acid

SMILES

OC1=NC(=O)N=C(O)C1

InChI Identifier

InChI=1S/C4H4N2O3/c7-2-1-3(8)6-4(9)5-2/h1H2,(H2,5,6,7,8,9)

InChI Key

HNYOPLTXPVRDBG-UHFFFAOYSA-N

Chemical Taxonomy

Description

belongs to the class of organic compounds known as pyrimidones. Pyrimidones are compounds that contain a pyrimidine ring, which bears a ketone. Pyrimidine is a 6-membered ring consisting of four carbon atoms and two nitrogen centers at the 1- and 3- ring positions.

Kingdom

Organic compounds

Super Class

Organoheterocyclic compounds

Class

Diazines

Sub Class

Pyrimidines and pyrimidine derivatives

Direct Parent

Pyrimidones

Alternative Parents

Substituents

Pyrimidone
Hydropyrimidine
2,5-dihydropyrimidine
Carbonic acid derivative
Propargyl-type 1,3-dipolar organic compound
Organic 1,3-dipolar compound
Azacycle
Organic oxide
Organooxygen compound
Organonitrogen compound
Organopnictogen compound
Organic oxygen compound
Carbonyl group
Organic nitrogen compound
Hydrocarbon derivative
Aliphatic heteromonocyclic compound

Molecular Framework

Aliphatic heteromonocyclic compounds

External Descriptors

barbiturates (CHEBI:16294 )

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	4.04 g/L	ALOGPS
logP	-0.61	ALOGPS
logP	-0.54	ChemAxon
logS	-1.5	ALOGPS
pKa (Strongest Acidic)	5.45	ChemAxon
pKa (Strongest Basic)	-4.5	ChemAxon
Physiological Charge	-2	ChemAxon
Hydrogen Acceptor Count	5	ChemAxon
Hydrogen Donor Count	2	ChemAxon
Polar Surface Area	82.25 Å²	ChemAxon
Rotatable Bond Count	0	ChemAxon
Refractivity	26.62 m³·mol⁻¹	ChemAxon
Polarizability	10.28 Å³	ChemAxon
Number of Rings	1	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
GC-MS	GC-MS Spectrum - GC-MS (3 TMS)	splash10-001j-4926000000-96492cf12ddafb9fa2c1	Spectrum
GC-MS	GC-MS Spectrum - EI-B (Non-derivatized)	splash10-002f-9500000000-e1223bb8d4414dc44ce0	Spectrum
GC-MS	GC-MS Spectrum - GC-MS (Non-derivatized)	splash10-001j-4926000000-96492cf12ddafb9fa2c1	Spectrum
Predicted GC-MS	Predicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, Positive	splash10-004u-9400000000-0974c3ea74bd38c34f76	Spectrum
Predicted GC-MS	Predicted GC-MS Spectrum - GC-MS (2 TMS) - 70eV, Positive	splash10-00di-7960000000-6fe630c5f061865ad590	Spectrum
Predicted GC-MS	Predicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, Positive	Not Available	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	splash10-004i-0900000000-7f6de7dbc0c8385a4986	Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 20V, Positive	splash10-004i-1900000000-488d5e5740b2d9154278	Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 40V, Positive	splash10-03di-2900000000-c1265888f45e8b1ed0b2	Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 10V, Negative	splash10-0059-6900000000-491964469e34c8b797d3	Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 20V, Negative	splash10-0006-9000000000-6bad946cb9132732634e	Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 40V, Negative	splash10-0006-9000000000-b2a8b5aa5f0c3f979744	Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 10V, Positive	splash10-004i-1900000000-cdefdcd922e108c6d3aa	Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 20V, Positive	splash10-002o-9200000000-e88c70650db76c01b021	Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 40V, Positive	splash10-014l-9000000000-6788917dd71900ff4a84	Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 10V, Negative	splash10-004l-5900000000-69a714f826072ea5da2a	Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 20V, Negative	splash10-0006-9000000000-a2a0aae677316906679f	Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 40V, Negative	splash10-0006-9000000000-90726b17dc36e29c5299	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
1D NMR	13C NMR Spectrum	Not Available	Spectrum