Cefazolin EP Impurity E(Cefazolin USP RC E) CAS 29490-19-5

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.29490-19-5
Molecular FormulaC3H4N2S2
Molecular Weight132.21 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Cefazolin EP Impurity E(Cefazolin USP RC E) CAS 29490-19-5 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.

As a process- or degradation-related impurity, Cefazolin EP Impurity E(Cefazolin USP RC E) (CAS 29490-19-5, C3H4N2S2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.

Cefazolin EP Impurity E(Cefazolin USP RC E) (C3H4N2S2) contains a nitrile group, sulfur-containing functionality. Its physicochemical properties are representative of its class; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

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 FormulaC3H4N2S2
Molecular Weight132.21 g/mol
Purity>95%
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)3.0
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1965
Nitrogen Atoms2
Sulfur Atoms2

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