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Pharmacopeial Impurities (EP / USP / BP)

Piroxicam EP Impurity H

Reference StandardAvailable on request

Order Piroxicam EP Impurity H (CAS 24683-21-4) online at Zemixal: C11H11NO5S, COA and SDS with every lot, worldwide shipping.

Pack sizes
Piroxicam EP Impurity H chemical structure
CAS number24683-21-4
FormulaC11H11NO5S
Molar mass269.28 g/mol
Physical formSolid
HS code38229090
InChIKeyKHQMRIBGVBXDMI-UHFFFAOYSA-N
IUPAC nameethyl 4-hydroxy-1,1-dioxo-2H-1lambda6,2-benzothiazine-3-carboxylate

About Piroxicam EP Impurity H

Analytical teams working on Piroxicam use Piroxicam EP Impurity H as a qualified comparison standard. Identity at a glance (Reference Standard): CAS 24683-21-4, formula C11H11NO5S and molar mass 269.28 g/mol. It is handled as a solid.

Where it is used

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

Storage and safety notes

It carries the GHS signal word Warning (H302, H312 and H332), so wear gloves and eye protection and work with good ventilation.

Standard pack sizes are 10 mg, 25 mg, 50 mg and 100 mg, and custom quantities are quoted on request. Every shipment includes a certificate of analysis with characterisation data. Send an enquiry through the quote panel and you get a formal offer with Incoterms and delivery time.

Reference standards for Piroxicam

See every impurity, metabolite and related compound we list for this API.

Piroxicam standards

Typical uses

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

Applications

Grade guides

Specifications and identifiers

Specifications of Piroxicam EP Impurity H
Product namePiroxicam EP Impurity H
Catalogue numberZX-022531
CAS number24683-21-4
IUPAC nameethyl 4-hydroxy-1,1-dioxo-2H-1lambda6,2-benzothiazine-3-carboxylate
Molecular formulaC11H11NO5S
Molar mass269.28 g/mol
Exact mass269.0358
GradeReference Standard
Physical formSolid
XLogP31.4
H-bond donors / acceptors2 / 6
Topological polar surface area101 Ų
HS code38229090
InChIKeyKHQMRIBGVBXDMI-UHFFFAOYSA-N
SMILESCCOC(=O)C1=C(C2=CC=CC=C2S(=O)(=O)N1)O
PubChem CID54678723
SynonymsEthyl 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

Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.

Safety and GHS hazards

GHS07 Irritant or harmful
Irritant or harmful

Signal word Warning

  • 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 summarised from public GHS notifications. It can vary with grade and concentration, so always follow the SDS supplied with your lot.

Pack sizes

Pack sizes of Piroxicam EP Impurity H
10 mgQuoted on request
25 mgQuoted on request
50 mgQuoted on request
100 mgQuoted on request

Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.

Questions about Piroxicam EP Impurity H

Which CAS number identifies Piroxicam EP Impurity H?
Piroxicam EP Impurity H is registered under CAS 24683-21-4. You may also see it listed as Ethyl 4-Hydroxy-2H-1,2-benzothiazine-3-carboxylate 1,1-Dioxide, Piroxicam - Impurity H, Piroxicam Impurity H. Our catalogue number for this item is ZX-022531.
What are the formula and molar mass of Piroxicam EP Impurity H?
For Piroxicam EP Impurity H, its formula is C11H11NO5S and its molar mass is 269.28 g/mol. The systematic (IUPAC) name is ethyl 4-hydroxy-1,1-dioxo-2H-1lambda6,2-benzothiazine-3-carboxylate. InChIKey KHQMRIBGVBXDMI-UHFFFAOYSA-N lets you match it in any structure database.
How is Piroxicam EP Impurity H used in pharmaceutical QC?
Piroxicam EP Impurity H is a characterised reference material linked to Piroxicam. Laboratories use it to identify and quantify this impurity during method development and validation, stability work, batch release testing and regulatory submissions.
What grade and pack sizes are available for Piroxicam EP Impurity H?
This listing is Reference Standard grade. Standard packs are 10 mg, 25 mg, 50 mg, 100 mg. Larger quantities and custom packing can be quoted on request.
Which documents come with Piroxicam EP Impurity H?
Each lot ships with a batch certificate of analysis and a 16-section GHS safety data sheet. A typical COA or specification sheet can be shared with the quotation before you order.
Can Zemixal ship Piroxicam EP Impurity H to my country?
Yes. Because Piroxicam EP Impurity H is classed as hazardous, it travels in UN-approved packaging as dangerous goods under IATA or IMDG rules, with the export paperwork your broker needs.

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