Fosfomycin Impurity 17 CAS 1609-72-9

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.1609-72-9
Molecular FormulaC7H13O3P
Molecular Weight176.15 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Fosfomycin Impurity 17 CAS 1609-72-9 chemical structure

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Fosfomycin Impurity 17.

CATO supplies Fosfomycin Impurity 17 (CAS 1609-72-9), a pharmacopoeial impurity reference standard (molecular formula C7H13O3P, MW 176.15 g/mol) used for the identification and quantification of trace impurities in APIs.

The molecular framework of Fosfomycin Impurity 17 (C7H13O3P) is characterized by a phosphonate group, a carboxylic acid group, a hydroxyl 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.

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 FormulaC7H13O3P
Molecular Weight176.15 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.)1957

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