Piroxicam EP Impurity H

Name: Piroxicam EP Impurity H
Brand: Vaqora Chemicals
SKU: VQ-023510

About Piroxicam EP Impurity H

Vaqora Chemicals supplies Piroxicam EP Impurity H, a pharmacopeial impurity of Piroxicam registered under CAS number 24683-21-4. Formula C11H11NO5S, molecular weight 269.28 g/mol. Systematically, it is named ethyl 4-hydroxy-1,1-dioxo-2H-1lambda6,2-benzothiazine-3-carboxylate. Common synonyms include Piroxicam - Impurity H and Piroxicam Impurity H.

The product is provided as a solid. Keep the vial tightly closed, protected from light and humidity, at the temperature stated on the Certificate of Analysis. It carries the GHS signal word “Warning” with 3 hazard statements. 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.

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 H
Catalogue No.	VQ-023510
CAS Number	24683-21-4
IUPAC name	ethyl 4-hydroxy-1,1-dioxo-2H-1lambda6,2-benzothiazine-3-carboxylate
Molecular formula	C₁₁H₁₁NO₅S
Molecular weight	269.28 g/mol
Exact mass	269.0358
Grade	Reference Standard
HSN code	38229090
InChIKey	KHQMRIBGVBXDMI-UHFFFAOYSA-N
SMILES	CCOC(=O)C1=C(C2=CC=CC=C2S(=O)(=O)N1)O
PubChem CID	54678723

Physical properties
Physical form	Solid
LogP (XLogP3)	1.4
H-bond donors / acceptors	2 / 6
TPSA	101 Å²
Synonyms	Ethyl 4-Hydroxy-2H-1,2-benzothiazine-3-carboxylate 1,1-Dioxide, Piroxicam - Impurity H, Piroxicam Impurity H, 2H-1,2-Benzothiazine-3-carboxylic acid, 4-hydroxy-, ethyl ester, 1,1-dioxide, Ethyl 4-hydroxy-2H-benzo[e][1,2]thiazine-3-carboxylate 1,1-dioxide, Ethyl 4-Hydroxy-2H-1,2-benzothiazine-3-carboxylate 1,1-Dioxide(Piroxicam Impurity H), Ethyl 4-Hydroxy-2H-1,2-benzothiazine-3-carboxylate 1,1-Dioxide (Piroxicam Impurity H), Ethyl 4-hydroxy-2H-1,2-benzothiazine-3-carboxylate-1,1-dioxide, (Piroxicam Impurity H), 4-Hydroxy-2H-1,2-benzothiazine-3-carboxylic Acid Ethyl Ester 1,1-Dioxide, ethyl 4-hydroxy-1,1-dioxo-2H-1$l^{6}, 4-hydroxy-2H-1,2-benzothiazine-3-carboxylic acid

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H302Harmful if swallowed
H312Harmful in contact with skin
H332Harmful if inhaled

Precautionary statements: P261, P264, P270, P271, P280, P301 + P317, P302 + P352, P304 + P340, P317, P321, P330, P362 + P364, 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 H?

The CAS Registry Number of Piroxicam EP Impurity H is 24683-21-4. It is also known as Ethyl 4-Hydroxy-2H-1,2-benzothiazine-3-carboxylate 1,1-Dioxide, Piroxicam - Impurity H, Piroxicam Impurity H.

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

Piroxicam EP Impurity H has the molecular formula C11H11NO5S and a molecular weight of 269.28 g/mol. Its IUPAC name is ethyl 4-hydroxy-1,1-dioxo-2H-1lambda6,2-benzothiazine-3-carboxylate.

What is Piroxicam EP Impurity H used for?

Piroxicam EP Impurity H 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 H can I order?

We supply Piroxicam EP Impurity H 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 H?

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

Yes. Piroxicam EP Impurity H 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.