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Pharmacopeial Impurities (EP / USP / BP)

Piroxicam EP Impurity I

Reference StandardAvailable on request

Piroxicam EP Impurity I (CAS 76508-35-5) supplier Zemixal: C12H13NO5S, COA and SDS with every lot, worldwide shipping. Catalogue no. ZX-022532.

Pack sizes
Piroxicam EP Impurity I chemical structure
CAS number76508-35-5
FormulaC12H13NO5S
Molar mass283.3 g/mol
Physical formSolid
HS code38229090
InChIKeyKCSORUCCHDBUFQ-UHFFFAOYSA-N
IUPAC namepropan-2-yl 4-hydroxy-1,1-dioxo-2H-1lambda6,2-benzothiazine-3-carboxylate

About Piroxicam EP Impurity I

Analytical teams working on Piroxicam use Piroxicam EP Impurity I as a qualified comparison standard. Key data (Reference Standard): CAS 76508-35-5, formula C12H13NO5S and molar mass 283.3 g/mol. It is handled as a solid.

Use cases we see most often

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

Storage and safety notes

Hazard communication follows GHS (Warning: H302). Our SDS lists exposure controls and first-aid measures.

Standard pack sizes are 10 mg, 25 mg, 50 mg and 100 mg, and custom quantities are quoted on request. Each lot travels with 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

Pharmaceutical Manufacturing and QCResearch Labs and Universities

Grade guides

Ph. Eur. Grade (European Pharmacopoeia)

Specifications and identifiers

Specifications of Piroxicam EP Impurity I
Product namePiroxicam EP Impurity I
Catalogue numberZX-022532
CAS number76508-35-5
IUPAC namepropan-2-yl 4-hydroxy-1,1-dioxo-2H-1lambda6,2-benzothiazine-3-carboxylate
Molecular formulaC12H13NO5S
Molar mass283.3 g/mol
Exact mass283.0514
GradeReference Standard
Physical formSolid
XLogP31.8
H-bond donors / acceptors2 / 6
Topological polar surface area101 Ų
HS code38229090
InChIKeyKCSORUCCHDBUFQ-UHFFFAOYSA-N
SMILESCC(C)OC(=O)C1=C(C2=CC=CC=C2S(=O)(=O)N1)O
PubChem CID54687027
SynonymsPiroxicam - Impurity I, 1-Methylethyl 4-Hydroxy-2H-1,2-benzothiazine-3-carboxylate 1,1-Dioxide, 2H-1,2-Benzothiazine-3-carboxylic acid, 4-hydroxy-, 1-methylethyl ester, 1,1-dioxide, Piroxicam Impurity I, Isopropyl 4-hydroxy-2H-benzo[e][1,2]thiazine-3-carboxylate 1,1-dioxide, Isopropyl 4-Hydroxy-2H-1,2-benzothiazine-3-carboxylate 1,1-Dioxide (Piroxicam Impurity I), (Piroxicam Impurity I), isopropyl 4-hydroxy-2H-1,2-benzothiazine-3-carboxylate 1,1-dioxide, Isopropyl 4-Hydroxy-, 4-Hydroxy-2H-1,2-benzothiazine-3-carboxylic Acid 1-Methylethyl Ester 1,1-Dioxide, Isopropyl 4-Hydroxy-_x000D_, 1-Methylethyl 4-Hydroxy-2H-1,2-benz

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

Precautionary statements P264, P270, P301 + P317, P330, 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 I
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 I

Which CAS number identifies Piroxicam EP Impurity I?
Piroxicam EP Impurity I is registered under CAS 76508-35-5. You may also see it listed as Piroxicam - Impurity I, 1-Methylethyl 4-Hydroxy-2H-1,2-benzothiazine-3-carboxylate 1,1-Dioxide, 2H-1,2-Benzothiazine-3-carboxylic acid, 4-hydroxy-, 1-methylethyl ester, 1,1-dioxide. Our catalogue number for this item is ZX-022532.
What are the formula and molar mass of Piroxicam EP Impurity I?
For Piroxicam EP Impurity I, its formula is C12H13NO5S and its molar mass is 283.3 g/mol. The systematic (IUPAC) name is propan-2-yl 4-hydroxy-1,1-dioxo-2H-1lambda6,2-benzothiazine-3-carboxylate. InChIKey KCSORUCCHDBUFQ-UHFFFAOYSA-N lets you match it in any structure database.
How is Piroxicam EP Impurity I used in pharmaceutical QC?
Piroxicam EP Impurity I 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 I?
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 I?
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 I to my country?
Yes. Because Piroxicam EP Impurity I 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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