Fosfomycin Impurity 22 CAS CATO-C4X-131622

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.CATO-C4X-131622
Molecular FormulaC3H7O4P
Molecular WeightN/A
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Fosfomycin Impurity 22 CAS CATO-C4X-131622 chemical structure

Description

Owing to a carbohydrate-derived structure, an amide group, a phosphate ester group, Fosfomycin Impurity 22 is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 259.19 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

As a process- or degradation-related impurity, Fosfomycin Impurity 22 (CAS CATO-C4X-131622, C3H7O4PC4H11NO3) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.

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 FormulaC3H7O4P C4H11NO3
Molecular Weight259.19 g/mol
Purity>95%
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO, water
StabilityLight-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)-0.5
Nitrogen Atoms1

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