Chlorzoxazone

Name: Chlorzoxazone
Brand: Zemixal
SKU: ZX-003996

IP/BP/USPAvailable on request

Buy Chlorzoxazone (CAS 95-25-0) from Zemixal. Lab and bulk packs, batch COA, fast global delivery. Catalogue no. ZX-003996.

Pack sizes

CAS number95-25-0

FormulaC₇H₄ClNO₂

Molar mass169.56 g/mol

Physical formSolid

HS code2933

InChIKeyTZFWDZFKRBELIQ-UHFFFAOYSA-N

IUPAC name5-chloro-3H-1,3-benzoxazol-2-one

About Chlorzoxazone

Chlorzoxazone sits in our analgesic & Anti-inflammatory APIs section and ships worldwide from stock or short lead time. For your records (IP/BP/USP), the material is defined by CAS 95-25-0, formula C7H4ClNO2 and molar mass 169.56 g/mol. It is described as white to off-white solid.

Common uses in the lab and plant

Pharmaceutical formulation
Generic drug development

Safe handling

Hazard communication follows GHS (Warning: H302, H315, H319 and H335). Our SDS lists exposure controls and first-aid measures.

Order it in 1 kg, 5 kg and 25 kg packs or ask for a bulk quotation. Every shipment includes a batch certificate of analysis and a 16-section SDS. Request pricing online and we confirm availability, documentation and freight to your country.

Reference standards for Chlorzoxazone

See every impurity, metabolite and related compound we list for this API.

Chlorzoxazone standards

Typical uses

Pharmaceutical formulation
Generic drug development

Applications

Pharmaceutical Manufacturing and QC

Grade guides

IP Grade (Indian Pharmacopoeia)BP Grade (British Pharmacopoeia)USP Grade (United States Pharmacopeia)

Specifications and identifiers

Specifications of Chlorzoxazone
Product name	Chlorzoxazone
Catalogue number	ZX-003996
CAS number	95-25-0
IUPAC name	5-chloro-3H-1,3-benzoxazol-2-one
Molecular formula	C₇H₄ClNO₂
Molar mass	169.56 g/mol
Exact mass	168.9931
Grade	IP/BP/USP
Physical form	Solid
Appearance	White to off-white solid
XLogP3	1.8
H-bond donors / acceptors	1 / 2
Topological polar surface area	38.3 Å²
HS code	2933
InChIKey	TZFWDZFKRBELIQ-UHFFFAOYSA-N
SMILES	C1=CC2=C(C=C1Cl)NC(=O)O2
PubChem CID	2733
Synonyms	5-Chloro-2(3H)-benzoxazolone, 5-Chloro-2-benzoxazolone, 2(3H)-Benzoxazolone, 5-chloro-, 5-Chloro-2-benzoxazolinone, 5-Chlorobenzoxazolidone, 5-Chloro-2-hydroxybenzoxazole, 5-Chloro-2-benzoxazolol, Parafon Forte DSC, Chlorzoxane, Strifon Forte Dsc, 2-Hydroxy-5-chlorobenzoxazole, 5-chlorobenzoxazolin-2-one

Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.

Safety and GHS hazards

Irritant or harmful

Signal word Warning

H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements P261, P264, P264 + P265, P270, P271, P280, P301 + P317, P302 + P352, P304 + P340, P305 + P351 + P338, P319, P321, P330, P332 + P317, P337 + P317, P362 + P364, P403 + P233, P405, P501

Classification summarised from public GHS notifications. It can vary with grade and concentration, so always follow the SDS supplied with your lot.

Pack sizes

Pack sizes of Chlorzoxazone
1 kg	Quoted on request
5 kg	Quoted on request
25 kg	Quoted on request

Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.

Questions about Chlorzoxazone

Which CAS number identifies Chlorzoxazone?

Chlorzoxazone is registered under CAS 95-25-0. You may also see it listed as 5-Chloro-2(3H)-benzoxazolone, 5-Chloro-2-benzoxazolone, 2(3H)-Benzoxazolone, 5-chloro-. Our catalogue number for this item is ZX-003996.

What are the formula and molar mass of Chlorzoxazone?

For Chlorzoxazone, its formula is C7H4ClNO2 and its molar mass is 169.56 g/mol. The systematic (IUPAC) name is 5-chloro-3H-1,3-benzoxazol-2-one. InChIKey TZFWDZFKRBELIQ-UHFFFAOYSA-N lets you match it in any structure database.

How is Chlorzoxazone used in pharmaceutical QC?

Chlorzoxazone is a characterised reference material linked to Chlorzoxazone. Laboratories use it to identify and quantify this impurity during method development and validation, stability work, batch release testing and regulatory submissions.

What grade and pack sizes are available for Chlorzoxazone?

This listing is IP/BP/USP grade. Standard packs are 1 kg, 5 kg, 25 kg. Larger quantities and custom packing can be quoted on request.

Which documents come with Chlorzoxazone?

Each lot ships with a batch certificate of analysis and a 16-section GHS safety data sheet. A typical COA or specification sheet can be shared with the quotation before you order.

Can Zemixal ship Chlorzoxazone to my country?

Yes. Because Chlorzoxazone is classed as hazardous, it travels in UN-approved packaging as dangerous goods under IATA or IMDG rules, with the export paperwork your broker needs.

Other grades with CAS 95-25-0

Chlorzoxazone WS

CAS: 95-25-0
Formula: C₇H₄ClNO₂
MW: 169.56 g/mol

ZX-006465

More Chlorzoxazone standards

More in Analgesic & Anti-inflammatory APIs

Chlorzoxazone WS

CAS: 95-25-0
Formula: C₇H₄ClNO₂
MW: 169.56 g/mol

ZX-006465

6-Hydroxy Chlorzoxazone

CAS: 1750-45-4
Formula: C₇H₄ClNO₃
MW: 185.56 g/mol

ZX-021194

Chlorzoxazone-d3

CAS: 1185173-60-7
Formula: C₇H₄ClNO₂
MW: 172.58 g/mol

ZX-028584

2-Amino-6-chloro-phenol

CAS: 38191-33-2
Formula: C₆H₆ClNO
MW: 143.57 g/mol

ZX-033191

Celecoxib

CAS: 169590-42-5
Formula: C₁₇H₁₄F₃N₃O₂S
MW: 381.4 g/mol

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Dexketoprofen

CAS: 156604-79-4
Formula: C₂₀H₂₅NO₆
MW: 375.4 g/mol

ZX-003997

Carisoprodol

CAS: 78-44-4
Formula: C₁₂H₂₄N₂O₄
MW: 260.33 g/mol

ZX-003994

Diacerein

CAS: 13739-02-1
Formula: C₁₉H₁₂O₈
MW: 368.3 g/mol

ZX-003998

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