Fosfomycin impurity 40 CAS CATO-C4X-131640

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.CATO-C4X-131640
Molecular FormulaC5H13O5P
Molecular Weight184.13 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Fosfomycin impurity 40 CAS CATO-C4X-131640 chemical structure

Description

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.

Fosfomycin impurity 40 (CAS CATO-C4X-131640) is a certified pharmaceutical impurity reference standard with the molecular formula C5H13O5P and a molecular weight of 184.13 g/mol.

Owing to a carbohydrate-derived structure, a phosphate ester group, Fosfomycin impurity 40 is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 184.13 g/mol — guide the selection of appropriate sample preparation and analytical techniques.

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 FormulaC5H13O5P
Molecular Weight184.13 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)-0.5

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