Tamsulosin Impurity 73 CAS CATO-C4X-118773

Purity ≥95%In StockPharmacopoeial Impurity Standards
CAS No.CATO-C4X-118773
Molecular FormulaC10H13NO4S
Molecular Weight243.28 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Tamsulosin Impurity 73 CAS CATO-C4X-118773 chemical structure

Description

The occurrence of Tamsulosin Impurity 73 is closely related to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

CATO supplies Tamsulosin Impurity 73 (CAS CATO-C4X-118773), a pharmacopoeial impurity reference standard (molecular formula C10H13NO4S, MW 243.28 g/mol) used for the identification and quantification of trace impurities in APIs.

Structurally, Tamsulosin Impurity 73 (C10H13NO4S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 243.28 g/mol, it falls into the medium-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), Tamsulosin Impurity 73 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 FormulaC10H13NO4S
Molecular Weight243.28 g/mol
Purity≥95%
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)5.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
Nitrogen Atoms1
Sulfur Atoms1

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