Oxacillin EP Impurity C

Name: Oxacillin EP Impurity C
Brand: Vaqora Chemicals
SKU: VQ-032988

About Oxacillin EP Impurity C

Oxacillin EP Impurity C (CAS 1136-45-4) is a pharmacopeial impurity of Oxacillin offered by Vaqora Chemicals. Formula C11H9NO3, molecular weight 203.19 g/mol. The IUPAC name is 5-methyl-3-phenyl-1,2-oxazole-4-carboxylic acid. Common synonyms include Oxacillin Related Compound C and 5-Methyl-3-phenylisoxazole-4-carboxylic acid.

It is supplied as a solid. Reference materials should be stored sealed and away from light and moisture, as specified on the accompanying COA. It carries the GHS signal word “Warning” with 1 hazard statement. Review the Safety Data Sheet before use.

As a characterised impurity of Oxacillin, it is used for analytical method development, method validation (AMV) and routine quality-control testing, and it supports ANDA and DMF regulatory filings. It is used across pharmaceutical manufacturing and academic and industrial research.

We offer Oxacillin EP Impurity C in 10 mg, 25 mg, 50 mg and 100 mg packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

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

Industries

Related to Oxacillin

View every impurity, metabolite and intermediate we list for Oxacillin.

Oxacillin impurities

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Oxacillin EP Impurity C
Catalogue No.	VQ-032988
CAS Number	1136-45-4
IUPAC name	5-methyl-3-phenyl-1,2-oxazole-4-carboxylic acid
Molecular formula	C₁₁H₉NO₃
Molecular weight	203.19 g/mol
Exact mass	203.0582
Grade	Reference Standard
HSN code	38229090
InChIKey	PENHKTNQUJMHIR-UHFFFAOYSA-N
SMILES	CC1=C(C(=NO1)C2=CC=CC=C2)C(=O)O
PubChem CID	14343

Physical properties
Physical form	Solid
LogP (XLogP3)	2
H-bond donors / acceptors	1 / 4
TPSA	63.3 Å²
Synonyms	Oxacillin 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

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H302Harmful if swallowed

Precautionary statements: P264, P270, P301 + P317, P330, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of Oxacillin EP Impurity C?

The CAS Registry Number of Oxacillin EP Impurity C is 1136-45-4. It is also known as Oxacillin Sodium Salt Monohydrate - Impurity C, Oxacillin Related Compound C, 5-Methyl-3-phenylisoxazole-4-carboxylic acid.

What is the molecular formula and molecular weight of Oxacillin EP Impurity C?

Oxacillin EP Impurity C has the molecular formula C11H9NO3 and a molecular weight of 203.19 g/mol. Its IUPAC name is 5-methyl-3-phenyl-1,2-oxazole-4-carboxylic acid.

What is Oxacillin EP Impurity C used for?

Oxacillin EP Impurity C is supplied as a characterised reference material related to Oxacillin. It is used for analytical method development and validation (AMV), impurity profiling, stability studies and quality control, and in ANDA/DMF regulatory filings.

Which grade and pack sizes of Oxacillin EP Impurity C can I order?

We supply Oxacillin EP Impurity C in Reference Standard grade, in 10 mg, 25 mg, 50 mg, 100 mg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Oxacillin EP Impurity C?

Yes. Every lot of Oxacillin EP Impurity C is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Oxacillin EP Impurity C be shipped internationally?

Yes. Oxacillin EP Impurity C is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.