Ethosuximide EP Impurity A CAS 631-31-2

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.631-31-2
Molecular FormulaC7H12O4
Molecular Weight160.17 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Ethosuximide EP Impurity A CAS 631-31-2 chemical structure

Description

CATO supplies Ethosuximide EP Impurity A (CAS 631-31-2), a pharmacopoeial impurity reference standard (molecular formula C7H12O4, MW 160.17 g/mol) used for the identification and quantification of trace impurities in APIs.

Ethosuximide EP Impurity A (C7H12O4) contains a carboxylic acid group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions.

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.

As a certified reference material (CRM), Ethosuximide EP Impurity A meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

Physical & Chemical Properties

Molecular FormulaC7H12O4
Molecular Weight160.17 g/mol
Purity97%+
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)2.0
CAS Registry Year (est.)1957

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