Fosfomycin Impurity 50 CAS 53621-85-5

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.53621-85-5
Molecular FormulaC3H9O4P
Molecular Weight140.07 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Fosfomycin Impurity 50 CAS 53621-85-5 chemical structure

Description

Fosfomycin Impurity 50 (C3H9O4P) contains a phosphate ester group, a carboxylic acid 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.

Fosfomycin Impurity 50 (CAS 53621-85-5) is a certified pharmaceutical impurity reference standard with the molecular formula C3H9O4P and a molecular weight of 140.07 g/mol.

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.

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 FormulaC3H9O4P
Molecular Weight140.07 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)-0.5
CAS Registry Year (est.)1972

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