Benzylpenicillin Potassium EP impurity E CAS 11039-68-2

Purity >90%In StockPharmacopoeial Impurity Standards
CAS No.11039-68-2
Molecular FormulaC16H20N2O5S
Molecular Weight352.41 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Benzylpenicillin Potassium EP impurity E CAS 11039-68-2 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 352.41 g/mol gives Benzylpenicillin Potassium EP impurity E distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies Benzylpenicillin Potassium EP impurity E (CAS 11039-68-2), a pharmacopoeial impurity reference standard (molecular formula C16H20N2O5S, MW 352.41 g/mol) used for the identification and quantification of trace impurities in APIs.

Structurally, Benzylpenicillin Potassium EP impurity E (C16H20N2O5S) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 352.41 g/mol, it falls into the moderately-high-molecular-weight range. 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).

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 certified reference material (CRM), Benzylpenicillin Potassium EP impurity E 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 FormulaC16H20N2O5S
Molecular Weight352.41 g/mol
Purity>90%
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)8.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1960
Nitrogen Atoms2
Sulfur Atoms1

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