Piroxicam EP Impurity C

Name: Piroxicam EP Impurity C
Brand: Vaqora Chemicals
SKU: VQ-027524

About Piroxicam EP Impurity C

Listed under CAS 24683-25-8, Piroxicam EP Impurity C is a pharmacopeial impurity of Piroxicam available from Vaqora Chemicals. Its molecular formula is C10H10N2O4S and its molecular weight is 254.26 g/mol. Its systematic (IUPAC) name is 4-hydroxy-2-methyl-1,1-dioxo-1lambda6,2-benzothiazine-3-carboxamide. Alternative names: Piroxicam - Impurity C and Despyridyl piroxicam.

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. It carries the GHS signal word “Warning” with 1 hazard statement. Review the Safety Data Sheet before use.

This Piroxicam impurity supports analytical method development and validation (AMV), batch release testing and the impurity sections of ANDA and DMF filings. Buyers come mainly from pharmaceutical manufacturing and academic and industrial research.

Standard pack sizes are 10 mg, 25 mg, 50 mg and 100 mg, and every batch ships with a Certificate of Analysis (COA) and we export worldwide.

Typical applications

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

Industries

Related to Piroxicam

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

Piroxicam impurities

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Piroxicam EP Impurity C
Catalogue No.	VQ-027524
CAS Number	24683-25-8
IUPAC name	4-hydroxy-2-methyl-1,1-dioxo-1lambda6,2-benzothiazine-3-carboxamide
Molecular formula	C₁₀H₁₀N₂O₄S
Molecular weight	254.26 g/mol
Exact mass	254.0361
Grade	Reference Standard
HSN code	38229090
InChIKey	BBOFTHBIXOWDMA-UHFFFAOYSA-N
SMILES	CN1C(=C(C2=CC=CC=C2S1(=O)=O)O)C(=O)N
PubChem CID	54692128

Physical properties
Physical form	Solid
LogP (XLogP3)	1.8
H-bond donors / acceptors	2 / 5
TPSA	109 Å²
Synonyms	Piroxicam - Impurity C, Despyridyl piroxicam, 4-Hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxamide 1,1-dioxide, 2H-1,2-Benzothiazine-3-carboxamide, 4-hydroxy-2-methyl-, 1,1-dioxide, Despyridyl Piroxicam (Piroxicam Impurity C), Piroxicam Impurity C, 4-Hydroxy-2-methyl-2H-benzo[e][1,2]thiazine-3-carboxamide 1,1-dioxide, 4-Hydroxy-2-methyl-1,1-dioxo-1,2-dihydro-1lambda~6~,2-benzothiazine-3-carboxamide

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 Piroxicam EP Impurity C?

The CAS Registry Number of Piroxicam EP Impurity C is 24683-25-8. It is also known as Piroxicam - Impurity C, Despyridyl piroxicam, 4-Hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxamide 1,1-dioxide.

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

Piroxicam EP Impurity C has the molecular formula C10H10N2O4S and a molecular weight of 254.26 g/mol. Its IUPAC name is 4-hydroxy-2-methyl-1,1-dioxo-1lambda6,2-benzothiazine-3-carboxamide.

What is Piroxicam EP Impurity C used for?

Piroxicam EP Impurity C is supplied as a characterised reference material related to Piroxicam. 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 Piroxicam EP Impurity C can I order?

We supply Piroxicam 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 Piroxicam EP Impurity C?

Yes. Every lot of Piroxicam 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 Piroxicam EP Impurity C be shipped internationally?

Yes. Piroxicam 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.