Foscarnet Sodium EP Impurity B CAS 55920-24-6

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.55920-24-6
Molecular FormulaC3H5O5P
Molecular WeightN/A
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Foscarnet Sodium EP Impurity B CAS 55920-24-6 chemical structure

Description

The occurrence of Foscarnet Sodium EP Impurity B is closely related to a phosphate ester group, a carboxylic acid group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

Foscarnet Sodium EP Impurity B (CAS 55920-24-6) is a certified pharmaceutical impurity reference standard with the molecular formula C3H5O5PNa and a molecular weight of 175.03 g/mol.

The molecular framework of Foscarnet Sodium EP Impurity B (C3H5O5PNa) is characterized by a phosphate ester group, a carboxylic acid 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.

As a certified reference material (CRM), Foscarnet Sodium EP Impurity B 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 FormulaC3H5O5P 2*Na
Molecular Weight175.03 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)1.5
CAS Registry Year (est.)1972

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