Capecitabine Impurity 31 CAS 72402-14-3

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.72402-14-3
Molecular FormulaC9H16O5
Molecular Weight204.22 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Capecitabine Impurity 31 CAS 72402-14-3 chemical structure

Description

Capecitabine Impurity 31 (CAS 72402-14-3) is a certified pharmaceutical impurity reference standard with the molecular formula C9H16O5 and a molecular weight of 204.22 g/mol.

The molecular framework of Capecitabine Impurity 31 (C9H16O5) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development.

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.

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 FormulaC9H16O5
Molecular Weight204.22 g/mol
Purity97%+
StorageStore in a cool place (≤25°C), keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO
StabilityHygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)2.0
CAS Registry Year (est.)1977

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