Ethyl 4-(5-methyl-3-phenylisoxazol-4-yl)benze… 1884279-18-8

Name: Ethyl 4-(5-methyl-3-phenylisoxazol-4-yl)benzenesulfonate
Brand: Vaqora Chemicals
SKU: VQ-043342

About Ethyl 4-(5-methyl-3-phenylisoxazol-4-yl)benzenesulfonate

Ethyl 4-(5-methyl-3-phenylisoxazol-4-yl)benzenesulfonate (CAS 1884279-18-8) is an impurity of Parecoxib offered by Vaqora Chemicals. The compound has the formula C18H17NO4S, corresponding to a molecular weight of 343.4 g/mol. The IUPAC name is ethyl 4-(5-methyl-3-phenyl-1,2-oxazol-4-yl)benzenesulfonate. Alternative names: Parecoxib Sodium-23.

The product is provided as a solid. Reference materials should be stored sealed and away from light and moisture, as specified on the accompanying COA. Good laboratory practice and suitable PPE are recommended during handling.

Pharmaceutical QC and development laboratories use this impurity standard of Parecoxib to develop and validate HPLC methods, to set specification limits and to document impurity profiles in ANDA and DMF submissions. Buyers come mainly from pharmaceutical manufacturing and academic and industrial research.

We offer Ethyl 4-(5-methyl-3-phenylisoxazol-4-yl)benzenesulfonate in 10 mg, 25 mg, 50 mg and 100 mg packs with a batch-specific COA, and ship to customers 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	Ethyl 4-(5-methyl-3-phenylisoxazol-4-yl)benzenesulfonate
Catalogue No.	VQ-043342
CAS Number	1884279-18-8
IUPAC name	ethyl 4-(5-methyl-3-phenyl-1,2-oxazol-4-yl)benzenesulfonate
Molecular formula	C₁₈H₁₇NO₄S
Molecular weight	343.4 g/mol
Exact mass	343.0878
Grade	Reference Standard
HSN code	38229090
InChIKey	PKUWHRPKSFOEFG-UHFFFAOYSA-N
SMILES	CCOS(=O)(=O)C1=CC=C(C=C1)C2=C(ON=C2C3=CC=CC=C3)C
PubChem CID	91810728

Physical properties
Physical form	Solid
LogP (XLogP3)	3.7
H-bond donors / acceptors	0 / 5
TPSA	77.8 Å²

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 Ethyl 4-(5-methyl-3-phenylisoxazol-4-yl)benzenesulfonate?

The CAS Registry Number of Ethyl 4-(5-methyl-3-phenylisoxazol-4-yl)benzenesulfonate is 1884279-18-8. It is also known as 4-(5-Methyl-3-phenyl-4-isoxazolyl)-ethyl Ester Benzenesulfonic Acid, Parecoxib Sodium-23, Benzenesulfonic acid, 4-(5-methyl-3-phenyl-4-isoxazolyl)-, ethyl ester.

What is the molecular formula and molecular weight of Ethyl 4-(5-methyl-3-phenylisoxazol-4-yl)benzenesulfonate?

Ethyl 4-(5-methyl-3-phenylisoxazol-4-yl)benzenesulfonate has the molecular formula C18H17NO4S and a molecular weight of 343.4 g/mol. Its IUPAC name is ethyl 4-(5-methyl-3-phenyl-1,2-oxazol-4-yl)benzenesulfonate.

What is Ethyl 4-(5-methyl-3-phenylisoxazol-4-yl)benzenesulfonate used for?

Ethyl 4-(5-methyl-3-phenylisoxazol-4-yl)benzenesulfonate 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 Ethyl 4-(5-methyl-3-phenylisoxazol-4-yl)benzenesulfonate can I order?

We supply Ethyl 4-(5-methyl-3-phenylisoxazol-4-yl)benzenesulfonate 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 Ethyl 4-(5-methyl-3-phenylisoxazol-4-yl)benzenesulfonate?

Yes. Every lot of Ethyl 4-(5-methyl-3-phenylisoxazol-4-yl)benzenesulfonate 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 Ethyl 4-(5-methyl-3-phenylisoxazol-4-yl)benzenesulfonate be shipped internationally?

Yes. We export Ethyl 4-(5-methyl-3-phenylisoxazol-4-yl)benzenesulfonate worldwide by air and sea freight or express courier, on EXW, FOB, CIF, CFR or DAP Incoterms, with full export documentation.