C7H4ClNO2
169.56 g/mol
APIWarning
Chlorzoxazone
CAS95-25-0EC202-403-9
Category
API
Compound Class
Heterocycle
Primary Use
Pharmaceutical Raw Material
Chlorzoxazone is a chemical compound used as a centrally acting muscle relaxant in pharmaceutical manufacturing. It is supplied as an active pharmaceutical ingredient for the production of products intended to relieve muscle spasm and associated discomfort.
relief of muscle spasm and associated pain or discomfortmanagement of acute paintension headache
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Referencesame scaffold
2-Oxo-2H-benzoxazole-5-carboxylic acid
CAS65422-72-2
research compound
Safety Reference
Warning
H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
Customs Tariff Classification
The international HS code for Chlorzoxazone (CAS 95-25-0) is 2934.99.
HS code (international, 6-digit)
2934.99
EU CN code (8-digit)
2934 99 90
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
5-chloro-3H-1,3-benzoxazol-2-one
InChIKey
TZFWDZFKRBELIQ-UHFFFAOYSA-N
SMILES
C1=CC2=C(C=C1Cl)NC(=O)O2
Synonyms (72)
- CLW
- Chlorzoxazone (JAN/USP/INN)
- Chlorzoxazone, United States Pharmacopeia (USP)
- Chlorzoxazonum [INN-Latin]
- Clorzoxazona [INN-Spanish]
- 2-BENZOXAZOLINONE, 5-CHLORO-
- 2-Hydroxy-5-chlorobenzoxazole
- 5-Chlorbenzoxazolin-2-on
- 5-Chloro-2(3H)-benzoxazolone
- 5-Chloro-2-benzoxazolinone
- 5-Chloro-2-benzoxazolol
- 5-Chloro-2-benzoxazolone
- 5-Chloro-2-hydroxybenzoxazole
- 5-Chloro-3(H)-2-benzoxazolone
- 5-Chloro-benzooxazol-2-ol
- 5-Chlorobenzoksazolinon-2
- 5-Chlorobenzoksazolon-2
- 5-Chlorobenzoxazol-2-one
- 5-Chlorobenzoxazolidone
- 5-Chlorobenzoxazolinone
- 5-Chlorobenzoxazolone
- 5-chloro-1,3-benzoxazol-2-ol
- 5-chloro-2-benzoxazolinoone
- 5-chloro-3H-benzooxazol-2-one
- 5-chlorobenzo[d]oxazol-2-ol
- 5-chlorobenzoxazolin-2-one
- Biomioran
- CHLORZOXAZONE [MART.]
- Chloroxazone
- Chlorsoxazone
- Chlorzoxane
- Chlorzoxazon
- Chlorzoxazone (Standard)
- Chlorzoxazonum
- Clorzoxazona
- Clorzoxazone
- Escoflex
- Klorzoxazon
- Lorzone
- Mioran
- Miotran
- Myoflexin
- Myoflexine
- Neoflex
- Nyoflex
- Paraflex
- Paraflex (TN)
- Parafon
- Parafon Dsc
- Parafon Forte DSC
- Parafon-Forte
- Pathorysin
- Remofleks
- Solaxin
- Strifon
- Strifon Forte Dsc
- Usaf ma-10
- chlorozoxazone
- chlorzoxazona
- chlorzoxazone
- component of Parafon Forte
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