Cefazolin Impurity 46 CAS 18686-82-3

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.18686-82-3
Molecular FormulaC2H2N2S2
Molecular Weight118.18 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Cefazolin Impurity 46 CAS 18686-82-3 chemical structure

Description

Cefazolin Impurity 46 (CAS 18686-82-3) is a certified pharmaceutical impurity reference standard with the molecular formula C2H2N2S2 and a molecular weight of 118.18 g/mol.

Owing to a nitrile group, sulfur-containing functionality, Cefazolin Impurity 46 is typically white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 118.18 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).

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.

As a certified reference material (CRM), Cefazolin Impurity 46 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

Physical & Chemical Properties

Molecular FormulaC2H2N2S2
Molecular Weight118.18 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.)1962
Nitrogen Atoms2
Sulfur Atoms2

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