Parecoxib Impurity 65 CAS 96-35-5

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.96-35-5
Molecular FormulaC3H6O3
Molecular Weight90.08 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Parecoxib Impurity 65 CAS 96-35-5 chemical structure

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Parecoxib Impurity 65.

Parecoxib Impurity 65 (CAS 96-35-5) is a certified pharmaceutical impurity reference standard with the molecular formula C3H6O3 and a molecular weight of 90.08 g/mol.

Based on its molecular formula C3H6O3, Parecoxib Impurity 65 contains a carboxylic acid group, a hydroxyl group, an ether linkage; these features give the compound characteristic functional-group stretching vibrations in infrared spectroscopy. The molecular weight of 90.08 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry.

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.

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.

Physical & Chemical Properties

Molecular FormulaC3H6O3
Molecular Weight90.08 g/mol
Purity>95%
StorageStore at 2-8°C, keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO, water
StabilityHygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)1.0
CAS Registry Year (est.)1957

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