O-Methyl Piroxicam

Name: O-Methyl Piroxicam
Brand: Vaqora Chemicals
SKU: VQ-033220

About O-Methyl Piroxicam

Listed under CAS 76780-03-5, O-Methyl Piroxicam is an impurity of Piroxicam available from Vaqora Chemicals. With the molecular formula C16H15N3O4S, it has a molar mass of 345.4 g/mol. Systematically, it is named 4-methoxy-2-methyl-1,1-dioxo-N-pyridin-2-yl-1lambda6,2-benzothiazine-3-carboxamide.

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 Piroxicam, it is used for analytical method development, method validation (AMV) and routine quality-control testing, and it supports ANDA and DMF regulatory filings. Buyers come mainly from pharmaceutical manufacturing and academic and industrial research.

Vaqora Chemicals supplies O-Methyl Piroxicam 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 Piroxicam

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

Piroxicam impurities

Specifications & identifiers

Chemical identifiers
Product name	O-Methyl Piroxicam
Catalogue No.	VQ-033220
CAS Number	76780-03-5
IUPAC name	4-methoxy-2-methyl-1,1-dioxo-N-pyridin-2-yl-1lambda6,2-benzothiazine-3-carboxamide
Molecular formula	C₁₆H₁₅N₃O₄S
Molecular weight	345.4 g/mol
Exact mass	345.0783
Grade	Reference Standard
HSN code	38229090
InChIKey	JQZDWMTZAOWOEM-UHFFFAOYSA-N
SMILES	CN1C(=C(C2=CC=CC=C2S1(=O)=O)OC)C(=O)NC3=CC=CC=N3
PubChem CID	578698

Physical properties
Physical form	Solid
LogP (XLogP3)	2.8
H-bond donors / acceptors	1 / 6
TPSA	97 Å²

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 O-Methyl Piroxicam?

The CAS Registry Number of O-Methyl Piroxicam is 76780-03-5. It is also known as 4-Methoxy-2-methyl-N-(2-pyridyl)-2H-1,2-benzothiazine-3-carboxamide 1,1-Dioxide, 1,1-Dioxide 4-Methoxy-2-methyl-N-2-pyridinyl-2H-1,2-benzothiazine-3-carboxamide, 4-methoxy-2-methyl-N-(pyridin-2-yl)-2H-benzo[e][1,2]thiazine-3-carboxamide 1,1-dioxide.

What is the molecular formula and molecular weight of O-Methyl Piroxicam?

O-Methyl Piroxicam has the molecular formula C16H15N3O4S and a molecular weight of 345.4 g/mol. Its IUPAC name is 4-methoxy-2-methyl-1,1-dioxo-N-pyridin-2-yl-1lambda6,2-benzothiazine-3-carboxamide.

What is O-Methyl Piroxicam used for?

O-Methyl Piroxicam 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 O-Methyl Piroxicam can I order?

We supply O-Methyl Piroxicam 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 O-Methyl Piroxicam?

Yes. Every lot of O-Methyl Piroxicam 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 O-Methyl Piroxicam be shipped internationally?

Yes. O-Methyl Piroxicam 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.