Record Information
Version1.0
Creation Date2016-05-22 03:38:53 UTC
Update Date2016-11-09 01:15:26 UTC
Accession NumberCHEM016630
Identification
Common NameChlorzoxazone
ClassSmall Molecule
DescriptionA centrally acting central muscle relaxant with sedative properties. It is claimed to inhibit muscle spasm by exerting an effect primarily at the level of the spinal cord and subcortical areas of the brain. (From Martindale, The Extra Pharmacopoea, 30th ed, p1202)
Contaminant Sources
  • HMDB Contaminants - Urine
  • STOFF IDENT Compounds
  • ToxCast & Tox21 Chemicals
Contaminant TypeNot Available
Chemical Structure
Thumb
Synonyms
ValueSource
2-Hydroxy-5-chlorobenzoxazoleChEBI
5-Chloro-2(3H)-benzoxazoloneChEBI
5-Chloro-2-benzoxazolinoneChEBI
5-Chloro-2-benzoxazololChEBI
5-Chloro-2-benzoxazoloneChEBI
5-Chloro-2-hydroxybenzoxazoleChEBI
5-ChlorobenzoxazolidoneChEBI
5-Chlorobenzoxazolin-2-oneChEBI
ChlorzoxaneChEBI
ChlorzoxazonaChEBI
ChlorzoxazonumChEBI
ParaflexKegg
ChloroxazoneHMDB
ChlorzoxazonHMDB
McNeil brand OF chlorzoxazoneHMDB
Ortho brand OF chlorzoxazoneHMDB
Parafon forte DSCHMDB
ParafonHMDB
Chemical FormulaC7H4ClNO2
Average Molecular Mass169.565 g/mol
Monoisotopic Mass168.993 g/mol
CAS Registry Number95-25-0
IUPAC Name5-chloro-2,3-dihydro-1,3-benzoxazol-2-one
Traditional Namechlorzoxazone
SMILESClC1=CC2=C(OC(=O)N2)C=C1
InChI IdentifierInChI=1S/C7H4ClNO2/c8-4-1-2-6-5(3-4)9-7(10)11-6/h1-3H,(H,9,10)
InChI KeyTZFWDZFKRBELIQ-UHFFFAOYSA-N
Chemical Taxonomy
Description belongs to the class of organic compounds known as benzoxazolones. These are organic compounds containing a benzene fused to an oxazole ring (a five-member aliphatic ring with three carbon atoms, one oxygen atom, and one nitrogen atom) bearing a ketone group.
KingdomOrganic compounds
Super ClassOrganoheterocyclic compounds
ClassBenzoxazoles
Sub ClassBenzoxazolones
Direct ParentBenzoxazolones
Alternative Parents
Substituents
  • Benzoxazolone
  • Aryl chloride
  • Aryl halide
  • Benzenoid
  • Azole
  • Oxazole
  • Heteroaromatic compound
  • Azacycle
  • Oxacycle
  • Organic oxide
  • Organic nitrogen compound
  • Organooxygen compound
  • Organonitrogen compound
  • Organochloride
  • Organohalogen compound
  • Organopnictogen compound
  • Organic oxygen compound
  • Hydrocarbon derivative
  • Aromatic heteropolycyclic compound
Molecular FrameworkAromatic heteropolycyclic compounds
External Descriptors
Biological Properties
StatusDetected and Not Quantified
OriginNot Available
Cellular LocationsNot Available
Biofluid LocationsNot Available
Tissue LocationsNot Available
PathwaysNot Available
ApplicationsNot Available
Biological RolesNot Available
Chemical RolesNot Available
Physical Properties
StateNot Available
AppearanceNot Available
Experimental Properties
PropertyValue
Melting PointNot Available
Boiling PointNot Available
SolubilityNot Available
Predicted Properties
PropertyValueSource
Water Solubility2.96 g/LALOGPS
logP2.09ALOGPS
logP1.94ChemAxon
logS-1.8ALOGPS
pKa (Strongest Acidic)9.39ChemAxon
pKa (Strongest Basic)-2.2ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count2ChemAxon
Hydrogen Donor Count1ChemAxon
Polar Surface Area38.33 ŲChemAxon
Rotatable Bond Count0ChemAxon
Refractivity41.07 m³·mol⁻¹ChemAxon
Polarizability14.94 ųChemAxon
Number of Rings2ChemAxon
Bioavailability1ChemAxon
Rule of FiveYesChemAxon
Ghose FilterNoChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleNoChemAxon
Spectra
Spectra
Spectrum TypeDescriptionSplash KeyView
GC-MSGC-MS Spectrum - EI-B (Non-derivatized)splash10-02t9-7900000000-bf1beeca5227a276a1a9Spectrum
GC-MSGC-MS Spectrum - EI-B (Non-derivatized)splash10-02t9-7900000000-bf1beeca5227a276a1a9Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, Positivesplash10-014i-1900000000-77df83a0769511baeb96Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, PositiveNot AvailableSpectrum
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, PositiveNot AvailableSpectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-qTof , Positivesplash10-00di-0900000000-60a947f3a3a65702c43bSpectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ , negativesplash10-014i-0900000000-5049b81b3f21c5158973Spectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ , negativesplash10-014i-0900000000-c7ee77e191a097d4e0baSpectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ , negativesplash10-00lr-0900000000-004a71f655e522e841deSpectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ , negativesplash10-001i-4900000000-b7b03cbc9d434e2b03f2Spectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ , negativesplash10-003i-9100000000-8a0cf328f650c7cd4780Spectrum
LC-MS/MSLC-MS/MS Spectrum - , positivesplash10-00di-0900000000-60a947f3a3a65702c43bSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-00di-0900000000-b157f14bda84940ce6f0Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-00di-0900000000-1160c69f5a00e22b993dSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-001i-0900000000-4ad343b03b4421d4d5efSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-014i-0900000000-8f6b0f1e098737ec9a8bSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-014i-0900000000-77cf5afa849168e0d47cSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-001l-2900000000-4530cefc3528a1ea69aaSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-014i-0900000000-17303fd327c77e9416c7Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-014r-0900000000-ca9ae316c33b4d133176Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-000i-1900000000-71762abc7b749630bea6Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-00di-0900000000-b64f4a6255327486b59aSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-00di-0900000000-57d2d934c4c43717f60cSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-01ox-2900000000-e68db7b29f08e0ca69feSpectrum
1D NMR1H NMR SpectrumNot AvailableSpectrum
1D NMR13C NMR SpectrumNot AvailableSpectrum
1D NMR1H NMR SpectrumNot AvailableSpectrum
1D NMR13C NMR SpectrumNot AvailableSpectrum
1D NMR1H NMR SpectrumNot AvailableSpectrum
1D NMR13C NMR SpectrumNot AvailableSpectrum
1D NMR1H NMR SpectrumNot AvailableSpectrum
1D NMR13C NMR SpectrumNot AvailableSpectrum
1D NMR1H NMR SpectrumNot AvailableSpectrum
1D NMR13C NMR SpectrumNot AvailableSpectrum
1D NMR1H NMR SpectrumNot AvailableSpectrum
1D NMR13C NMR SpectrumNot AvailableSpectrum
1D NMR1H NMR SpectrumNot AvailableSpectrum
1D NMR13C NMR SpectrumNot AvailableSpectrum
1D NMR1H NMR SpectrumNot AvailableSpectrum
1D NMR13C NMR SpectrumNot AvailableSpectrum
1D NMR1H NMR SpectrumNot AvailableSpectrum
1D NMR13C NMR SpectrumNot AvailableSpectrum
1D NMR1H NMR SpectrumNot AvailableSpectrum
1D NMR13C NMR SpectrumNot AvailableSpectrum
Toxicity Profile
Route of ExposureNot Available
Mechanism of ToxicityNot Available
MetabolismNot Available
Toxicity ValuesNot Available
Lethal DoseNot Available
Carcinogenicity (IARC Classification)Not Available
Uses/SourcesNot Available
Minimum Risk LevelNot Available
Health EffectsNot Available
SymptomsNot Available
TreatmentNot Available
Concentrations
Not Available
DrugBank IDDB00356
HMDB IDHMDB0014500
FooDB IDNot Available
Phenol Explorer IDNot Available
KNApSAcK IDNot Available
BiGG IDNot Available
BioCyc IDNot Available
METLIN IDNot Available
PDB IDCLW
Wikipedia LinkChlorzoxazone
Chemspider ID2632
ChEBI ID3655
PubChem Compound ID2733
Kegg Compound IDC07931
YMDB IDNot Available
ECMDB IDNot Available
References
Synthesis ReferenceNot Available
MSDSNot Available
General References
1. Wan J, Ernstgard L, Song BJ, Shoaf SE: Chlorzoxazone metabolism is increased in fasted Sprague-Dawley rats. J Pharm Pharmacol. 2006 Jan;58(1):51-61.
2. Park JY, Kim KA, Park PW, Ha JM: Effect of high-dose aspirin on CYP2E1 activity in healthy subjects measured using chlorzoxazone as a probe. J Clin Pharmacol. 2006 Jan;46(1):109-14.
3. Dong DL, Luan Y, Feng TM, Fan CL, Yue P, Sun ZJ, Gu RM, Yang BF: Chlorzoxazone inhibits contraction of rat thoracic aorta. Eur J Pharmacol. 2006 Sep 18;545(2-3):161-6. Epub 2006 Jun 29.
4. https://www.ncbi.nlm.nih.gov/pubmed/?term=10640318
5. https://www.ncbi.nlm.nih.gov/pubmed/?term=11727787
6. https://www.ncbi.nlm.nih.gov/pubmed/?term=12437348
7. https://www.ncbi.nlm.nih.gov/pubmed/?term=16763012
8. https://www.ncbi.nlm.nih.gov/pubmed/?term=16859676
9. https://www.ncbi.nlm.nih.gov/pubmed/?term=17621748
10. https://www.ncbi.nlm.nih.gov/pubmed/?term=21195386
11. https://www.ncbi.nlm.nih.gov/pubmed/?term=23975871
12. https://www.ncbi.nlm.nih.gov/pubmed/?term=24210069
13. https://www.ncbi.nlm.nih.gov/pubmed/?term=25815637
14. https://www.ncbi.nlm.nih.gov/pubmed/?term=6631711