Piroxicam EP Impurity K(Meloxicam EP Impurity A) CAS 24683-26-9

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.24683-26-9
Molecular FormulaC12H13NO5S
Molecular Weight283.30 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Piroxicam EP Impurity K(Meloxicam EP Impurity A) CAS 24683-26-9 chemical structure

Description

CATO manufactures Piroxicam EP Impurity K(Meloxicam EP Impurity A) under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.

CATO supplies Piroxicam EP Impurity K(Meloxicam EP Impurity A) (CAS 24683-26-9), a pharmacopoeial impurity reference standard (molecular formula C12H13NO5S, MW 283.30 g/mol) used for the identification and quantification of trace impurities in APIs.

Structurally, Piroxicam EP Impurity K(Meloxicam EP Impurity A) (C12H13NO5S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 283.30 g/mol, it falls into the medium-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).

This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.

Physical & Chemical Properties

Molecular FormulaC12H13NO5S
Molecular Weight283.30 g/mol
Purity>95%
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)7.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1964
Nitrogen Atoms1
Sulfur Atoms1

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