Foscarnet Sodium EP Impurity D CAS 1474-78-8

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.1474-78-8
Molecular FormulaC7H15O5P
Molecular Weight210.16 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Foscarnet Sodium EP Impurity D CAS 1474-78-8 chemical structure

Description

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

As a process- or degradation-related impurity, Foscarnet Sodium EP Impurity D (CAS 1474-78-8, C7H15O5P) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.

Owing to a phosphate ester group, a carboxylic acid group, a hydroxyl group, an ether linkage, Foscarnet Sodium EP Impurity D is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 210.16 g/mol — guide the selection of appropriate sample preparation and analytical techniques.

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 FormulaC7H15O5P
Molecular Weight210.16 g/mol
Purity>95%
StorageStore in a cool place (≤25°C), keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO, water
StabilityHygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)0.5
CAS Registry Year (est.)1957

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