Ketoprofen Impurity 39 CAS CATO-C4X-147139

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.CATO-C4X-147139
Molecular FormulaC17H15NO
Molecular Weight249.31 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Ketoprofen Impurity 39 CAS CATO-C4X-147139 chemical structure

Description

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

CATO supplies Ketoprofen Impurity 39 (CAS CATO-C4X-147139), a pharmacopoeial impurity reference standard (molecular formula C17H15NO, MW 249.31 g/mol) used for the identification and quantification of trace impurities in APIs.

Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, Ketoprofen Impurity 39 is typically pale yellow to yellow low-melting solid. Its solid-state physicochemical attributes — including a molecular weight of 249.31 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.

Physical & Chemical Properties

Molecular FormulaC17H15NO
Molecular Weight249.31 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)11.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
Nitrogen Atoms1

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