CAS 1665-48-1|Metaxalone

Introduction:Basic information about CAS 1665-48-1|Metaxalone, including its chemical name, molecular formula, synonyms, physicochemical properties, and safety information, etc.
Common NameMetaxalone
CAS Number1665-48-1Molecular Weight221.252
Density1.1±0.1 g/cm3Boiling Point453.6±14.0 °C at 760 mmHg
Molecular FormulaC12H15NO3Melting Point121-123ºC
MSDSChineseUSAFlash Point228.2±20.1 °C
Symbol
GHS07
Signal WordWarning

Names

NameMetaxalone
SynonymMore Synonyms

Metaxalone BiologicalActivity

DescriptionMetaxalone(AHR438;NSC170959) is a muscle relaxant used to relax muscles.Target: OthersMetaxalone is a muscle relaxant used to relax muscles and relieve pain caused by strains, sprains, and other musculoskeletal conditions. Its exact mechanism of action is not known, but it may be due to general central nervous system depression. It is considered to be a moderately strong muscle relaxant, with relatively low incidence of side effects.
Related CatalogSignaling Pathways >>Others >>OthersResearch Areas >>Neurological Disease
References

[1]. http://en.wikipedia.org/wiki/Metaxalone

Chemical & Physical Properties

Density1.1±0.1 g/cm3
Boiling Point453.6±14.0 °C at 760 mmHg
Melting Point121-123ºC
Molecular FormulaC12H15NO3
Molecular Weight221.252
Flash Point228.2±20.1 °C
Exact Mass221.105194
PSA47.56000
LogP2.42
Vapour Pressure0.0±1.1 mmHg at 25°C
Index of Refraction1.525
InChIKeyIMWZZHHPURKASS-UHFFFAOYSA-N
SMILESCc1cc(C)cc(OCC2CNC(=O)O2)c1
Storage condition-20°C Freezer

Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
RQ3850000
CHEMICAL NAME :
2-Oxazolidinone, 5-((3,5-xylyloxy)methyl)-
CAS REGISTRY NUMBER :
1665-48-1
LAST UPDATED :
199612
DATA ITEMS CITED :
4
MOLECULAR FORMULA :
C12-H15-N-O3
MOLECULAR WEIGHT :
221.28
WISWESSER LINE NOTATION :
T5MVOTJ D1OR C1 E1

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
775 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
27ZQAG "Psychotropic Drugs and Related Compounds," 2nd ed., Usdin, E., and D.H. Efron, Washington, DC, 1972 Volume(issue)/page/year: -,261,1972
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
515 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
ARZNAD Arzneimittel-Forschung. Drug Research. (Editio Cantor Verlag, Postfach 1255, W-7960 Aulendorf, Fed. Rep. Ger.) V.1- 1951- Volume(issue)/page/year: 17,242,1967
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
1690 mg/kg
TOXIC EFFECTS :
Behavioral - muscle weakness Behavioral - rigidity (including catalepsy) Sense Organs and Special Senses (Eye) - mydriasis (pupillary dilation)
REFERENCE :
AIPTAK Archives Internationales de Pharmacodynamie et de Therapie. (Heymans Institute of Pharmacology, De Pintelaan 185, B-9000 Ghent, Belgium) V.4- 1898- Volume(issue)/page/year: 233,326,1978
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
490 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
27ZQAG "Psychotropic Drugs and Related Compounds," 2nd ed., Usdin, E., and D.H. Efron, Washington, DC, 1972 Volume(issue)/page/year: -,261,1972

Safety Information

Symbol
GHS07
Signal WordWarning
Hazard StatementsH302
Precautionary StatementsP301 + P312 + P330
Hazard CodesF,T
Risk Phrases11-23/24/25-39/23/24/25
Safety Phrases7-16-36/37-45
RIDADRNONH for all modes of transport
RTECSRQ3850000

Articles3

More Articles
Commonly used muscle relaxant therapies for acute low back pain: a review of carisoprodol, cyclobenzaprine hydrochloride, and metaxalone.

Clin. Ther. 26(9) , 1355-67, (2004)

Low back pain is a leading reason for primary care visits. Many treatment options are available, but some lack scientific support.The aim of this review was to discuss the etiology of low back pain an...

Development of a Stability-Indicating RP-UPLC Method for Rapid Determination of Metaxalone and its Degradation Products in Solid Oral Dosage Form.

Sci. Pharm. 80(2) , 353-66, (2012)

A simple, sensitive and reproducible reversed phase ultra performance liquid chromatography (RP-UPLC) coupled with a photodiode array detector method was developed for the quantitative determination o...

Metaxalone (Skelaxin)-related death.

J. Anal. Toxicol. 28(6) , 537-41, (2004)

The case history and toxicological findings of a fatal multi-drug overdose involving metaxalone (Skelaxin) are presented. Gas-liquid chromatography with flame-ionization detection and gas chromatograp...

Synonyms

5-{[(3,5-dimethylphenyl)oxy]methyl}-1,3-oxazolidin-2-one
5-((3,5-Dimethylphenoxy)methyl)oxazolidin-2-one
Metaxalone
5-[(3,5-Dimethylphenoxy)methyl]-1,3-oxazolidin-2-one
5-[(3,5-Xylyloxy)methyl]-2-oxazolidinone
2-Oxazolidinone, 5-[(3,5-dimethylphenoxy)methyl]-
Metaxolone
MFCD00867700
5-(3,5-Dimethylphenoxymethyl)-2-oxazolidinone
Skelaxin
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