Cefotiam Impurity 41 CAS 61607-68-9

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.61607-68-9
Molecular FormulaC5H11N5S
Molecular Weight173.24 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Cefotiam Impurity 41 CAS 61607-68-9 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.

Cefotiam Impurity 41 (CAS 61607-68-9) is a certified pharmaceutical impurity reference standard with the molecular formula C5H11N5S and a molecular weight of 173.24 g/mol.

Owing to a nitrile group, sulfur-containing functionality, Cefotiam Impurity 41 is typically white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 173.24 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).

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 FormulaC5H11N5S
Molecular Weight173.24 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.)1974
Nitrogen Atoms5
Sulfur Atoms1

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