Duloxetine Impurity 55 CAS 1045348-04-6

Purity ≥95%In StockPharmacopoeial Impurity Standards
CAS No.1045348-04-6
Molecular FormulaC7H11NOS
Molecular Weight157.23 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Duloxetine Impurity 55 CAS 1045348-04-6 chemical structure

Description

Duloxetine Impurity 55 (CAS 1045348-04-6) is a certified pharmaceutical impurity reference standard with the molecular formula C7H11NOS and a molecular weight of 157.23 g/mol.

Based on its molecular formula C7H11NOS, Duloxetine Impurity 55 contains an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 157.23 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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), Duloxetine Impurity 55 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 FormulaC7H11NOS
Molecular Weight157.23 g/mol
Purity≥95%
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)3.0
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1988
Nitrogen Atoms1
Sulfur Atoms1

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