5-Methyl-3,4-diphenylisoxazole

Name: 5-Methyl-3,4-diphenylisoxazole
Brand: Vaqora Chemicals
SKU: VQ-027392

About 5-Methyl-3,4-diphenylisoxazole

5-Methyl-3,4-diphenylisoxazole (CAS 37928-17-9) is an impurity of Parecoxib offered by Vaqora Chemicals. The compound has the formula C16H13NO, corresponding to a molecular weight of 235.28 g/mol. The IUPAC name is 5-methyl-3,4-diphenyl-1,2-oxazole. Alternative names: Isoxazole, 5-methyl-3,4-diphenyl- and 3,4-Diphenyl-5-methylisoxazole.

It is supplied as a solid. Reference materials should be stored sealed and away from light and moisture, as specified on the accompanying COA. Handle it with standard laboratory precautions and appropriate personal protective equipment.

As a characterised impurity of Parecoxib, it is used for analytical method development, method validation (AMV) and routine quality-control testing, and it supports ANDA and DMF regulatory filings. Our customers for this product work in pharmaceutical manufacturing and academic and industrial research.

Vaqora Chemicals supplies 5-Methyl-3,4-diphenylisoxazole in 10 mg, 25 mg, 50 mg and 100 mg packs, each shipped with a Certificate of Analysis (COA), and exports worldwide.

Typical applications

Analytical method development
Method validation (AMV)
QC release testing
ANDA / DMF filings

Industries

Related to Parecoxib

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

Parecoxib impurities

Specifications & identifiers

Chemical identifiers
Product name	5-Methyl-3,4-diphenylisoxazole
Catalogue No.	VQ-027392
CAS Number	37928-17-9
IUPAC name	5-methyl-3,4-diphenyl-1,2-oxazole
Molecular formula	C₁₆H₁₃NO
Molecular weight	235.28 g/mol
Exact mass	235.0997
Grade	Reference Standard
HSN code	38229090
InChIKey	ZXIRUKJWLADSJS-UHFFFAOYSA-N
SMILES	CC1=C(C(=NO1)C2=CC=CC=C2)C3=CC=CC=C3
PubChem CID	9991673

Physical properties
Physical form	Solid
LogP (XLogP3)	4.1
H-bond donors / acceptors	0 / 2
TPSA	26 Å²
Synonyms	Isoxazole, 5-methyl-3,4-diphenyl-, Isoxazole, 5-Methyl-3,4-diphenyl- (Parecoxib sodiuM inteMediate), 3,4-Diphenyl-5-methylisoxazole, 3,4-diphenyl-5-methyl isoxazole, 3,4-diphenyl-5-methyl-isoxazole

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 5-Methyl-3,4-diphenylisoxazole?

The CAS Registry Number of 5-Methyl-3,4-diphenylisoxazole is 37928-17-9. It is also known as Isoxazole, 5-methyl-3,4-diphenyl-, Isoxazole, 5-Methyl-3,4-diphenyl- (Parecoxib sodiuM inteMediate), 3,4-Diphenyl-5-methylisoxazole.

What is the molecular formula and molecular weight of 5-Methyl-3,4-diphenylisoxazole?

5-Methyl-3,4-diphenylisoxazole has the molecular formula C16H13NO and a molecular weight of 235.28 g/mol. Its IUPAC name is 5-methyl-3,4-diphenyl-1,2-oxazole.

What is 5-Methyl-3,4-diphenylisoxazole used for?

5-Methyl-3,4-diphenylisoxazole is supplied as a characterised reference material related to Parecoxib. 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 5-Methyl-3,4-diphenylisoxazole can I order?

We supply 5-Methyl-3,4-diphenylisoxazole 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 5-Methyl-3,4-diphenylisoxazole?

Yes. Every lot of 5-Methyl-3,4-diphenylisoxazole 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 5-Methyl-3,4-diphenylisoxazole be shipped internationally?

Yes. We export 5-Methyl-3,4-diphenylisoxazole worldwide by air and sea freight or express courier, on EXW, FOB, CIF, CFR or DAP Incoterms, with full export documentation.