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API Reference Standards

Chlorzoxazone WS

Reference StandardIn stock

Order Chlorzoxazone WS (CAS 95-25-0) online at Zemixal. Lab and bulk packs, batch COA, fast global delivery. Packs from 10 mg.

Pack sizes
Chlorzoxazone WS chemical structure
CAS number95-25-0
FormulaC7H4ClNO2
Molar mass169.56 g/mol
Physical formSolid
HS code38229090
InChIKeyTZFWDZFKRBELIQ-UHFFFAOYSA-N
IUPAC name5-chloro-3H-1,3-benzoxazol-2-one

About Chlorzoxazone WS

Zemixal lists Chlorzoxazone WS for laboratories that identify, quantify or control Chlorzoxazone and its related substances. Identity at a glance (Reference Standard): CAS 95-25-0, formula C7H4ClNO2 and molar mass 169.56 g/mol. It is handled as a solid.

Typical applications

  • Identification & assay
  • Method development & validation
  • QC reference material

Storage and safety notes

Classified under GHS with signal word Warning and hazard statements H302, H315, H319 and H335. Read the SDS before first use.

Order it in 10 mg, 25 mg, 50 mg, 100 mg and 250 mg packs or ask for a bulk quotation. You receive a certificate of analysis with characterisation data with each order. 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

  • Identification & assay
  • Method development & validation
  • QC reference material

Applications

Pharmaceutical Manufacturing and QCResearch Labs and Universities

Specifications and identifiers

Specifications of Chlorzoxazone WS
Product nameChlorzoxazone WS
Catalogue numberZX-006465
CAS number95-25-0
IUPAC name5-chloro-3H-1,3-benzoxazol-2-one
Molecular formulaC7H4ClNO2
Molar mass169.56 g/mol
Exact mass168.9931
GradeReference Standard
Physical formSolid
XLogP31.8
H-bond donors / acceptors1 / 2
Topological polar surface area38.3 Ų
HS code38229090
InChIKeyTZFWDZFKRBELIQ-UHFFFAOYSA-N
SMILESC1=CC2=C(C=C1Cl)NC(=O)O2
PubChem CID2733
Synonyms5-chlorobenzo[d]oxazol-2(3H)-one, Chlorzoxazone, 5-Chloro-2(3H)-benzoxazolone, 2-Hydroxy-5-chlorobenzoxazole, 5-Chloro-1,3-benzoxazol-2(3H)-one, 5-Chloro-2-benzoxazolinone, 5-Chloro-2-oxo-3H-benzoxazole, 5-Chloro-3H-benzoxazol-2-one, 5-Chlorobenzoxazolidone, 5-Chlorobenzoxazolone, Biomioran, Cipzox

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

Safety and GHS hazards

GHS07 Irritant or harmful
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 WS
10 mgQuoted on request
25 mgQuoted on request
50 mgQuoted on request
100 mgQuoted on request
250 mgQuoted on request
500 mgQuoted on request
1 gQuoted 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 WS

Which CAS number identifies Chlorzoxazone WS?
Chlorzoxazone WS is registered under CAS 95-25-0. You may also see it listed as 5-chlorobenzo[d]oxazol-2(3H)-one, Chlorzoxazone, 5-Chloro-2(3H)-benzoxazolone. Our catalogue number for this item is ZX-006465.
What are the formula and molar mass of Chlorzoxazone WS?
For Chlorzoxazone WS, 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 WS used in pharmaceutical QC?
Chlorzoxazone WS 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 WS?
This listing is Reference Standard grade. Standard packs are 10 mg, 25 mg, 50 mg, 100 mg, 250 mg, 500 mg. Larger quantities and custom packing can be quoted on request.
Which documents come with Chlorzoxazone WS?
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 WS to my country?
Yes. Because Chlorzoxazone WS 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

More Chlorzoxazone standards

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