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Pharmacopeial Impurities (EP / USP / BP)

Oxacillin EP Impurity C

Reference StandardAvailable on request

Oxacillin EP Impurity C (CAS 1136-45-4) supplier Zemixal. Lab and bulk packs, batch COA, fast global delivery. Catalogue no. ZX-031666.

Pack sizes
Oxacillin EP Impurity C chemical structure
CAS number1136-45-4
FormulaC11H9NO3
Molar mass203.19 g/mol
Physical formSolid
HS code38229090
InChIKeyPENHKTNQUJMHIR-UHFFFAOYSA-N
IUPAC name5-methyl-3-phenyl-1,2-oxazole-4-carboxylic acid

About Oxacillin EP Impurity C

Analytical teams working on Oxacillin use Oxacillin EP Impurity C as a qualified comparison standard. Identity at a glance (Reference Standard): CAS 1136-45-4, formula C11H9NO3 and molar mass 203.19 g/mol. It is handled as a solid.

Typical applications

  • Pharmacopeial method verification
  • Impurity profiling
  • QC release testing
  • ANDA / DMF filings

Storage and safety notes

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

Order it in 10 mg, 25 mg, 50 mg and 100 mg packs or ask for a bulk quotation. Every shipment includes a certificate of analysis with characterisation data. Request pricing online and we confirm availability, documentation and freight to your country.

Reference standards for Oxacillin

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

Oxacillin standards

Typical uses

  • Pharmacopeial method verification
  • Impurity profiling
  • QC release testing
  • ANDA / DMF filings

Applications

Pharmaceutical Manufacturing and QCResearch Labs and Universities

Grade guides

Ph. Eur. Grade (European Pharmacopoeia)

Specifications and identifiers

Specifications of Oxacillin EP Impurity C
Product nameOxacillin EP Impurity C
Catalogue numberZX-031666
CAS number1136-45-4
IUPAC name5-methyl-3-phenyl-1,2-oxazole-4-carboxylic acid
Molecular formulaC11H9NO3
Molar mass203.19 g/mol
Exact mass203.0582
GradeReference Standard
Physical formSolid
XLogP32
H-bond donors / acceptors1 / 4
Topological polar surface area63.3 Ų
HS code38229090
InChIKeyPENHKTNQUJMHIR-UHFFFAOYSA-N
SMILESCC1=C(C(=NO1)C2=CC=CC=C2)C(=O)O
PubChem CID14343
SynonymsOxacillin Sodium Salt Monohydrate - Impurity C, Oxacillin Related Compound C, 5-Methyl-3-phenylisoxazole-4-carboxylic acid, 4-Isoxazolecarboxylic acid, 5-methyl-3-phenyl-, 5-Methyl-3-phenyl-4-isoxazolecarboxylic acid, 3-Phenyl-5-methylisoxazole-4-carboxylic acid, 5-Methyl-3-phenyl-isoxazole-4-carboxylic acid, 3-Phenyl-5-methylisoxazol-4-carbonsaeure, 5-methyl-3-phenylisoxazole-4-carboxylicacid, 5-methyl-3-phenylisoxazole-4-carboxlic acid, Pmic acid, Oxacillin Impurity 2

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

Precautionary statements P264, P270, P301 + P317, P330, 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 Oxacillin EP Impurity C
10 mgQuoted on request
25 mgQuoted on request
50 mgQuoted on request
100 mgQuoted on request

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

Questions about Oxacillin EP Impurity C

Which CAS number identifies Oxacillin EP Impurity C?
Oxacillin EP Impurity C is registered under CAS 1136-45-4. You may also see it listed as Oxacillin Sodium Salt Monohydrate - Impurity C, Oxacillin Related Compound C, 5-Methyl-3-phenylisoxazole-4-carboxylic acid. Our catalogue number for this item is ZX-031666.
What are the formula and molar mass of Oxacillin EP Impurity C?
For Oxacillin EP Impurity C, its formula is C11H9NO3 and its molar mass is 203.19 g/mol. The systematic (IUPAC) name is 5-methyl-3-phenyl-1,2-oxazole-4-carboxylic acid. InChIKey PENHKTNQUJMHIR-UHFFFAOYSA-N lets you match it in any structure database.
How is Oxacillin EP Impurity C used in pharmaceutical QC?
Oxacillin EP Impurity C is a characterised reference material linked to Oxacillin. 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 Oxacillin EP Impurity C?
This listing is Reference Standard grade. Standard packs are 10 mg, 25 mg, 50 mg, 100 mg. Larger quantities and custom packing can be quoted on request.
Which documents come with Oxacillin EP Impurity C?
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 Oxacillin EP Impurity C to my country?
Yes. Because Oxacillin EP Impurity C 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.

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