rac-Tamsulosin EP Impurity D CAS 94666-11-2

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.94666-11-2
Molecular FormulaC19H26N2O5S
Molecular Weight394.49 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

rac-Tamsulosin EP Impurity D CAS 94666-11-2 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 394.49 g/mol gives rac-Tamsulosin EP Impurity D distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies rac-Tamsulosin EP Impurity D (CAS 94666-11-2), a pharmacopoeial impurity reference standard (molecular formula C19H26N2O5S, MW 394.49 g/mol) used for the identification and quantification of trace impurities in APIs.

Based on its molecular formula C19H26N2O5S, rac-Tamsulosin EP Impurity D contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 394.49 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

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.

CATO manufactures rac-Tamsulosin EP Impurity D under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.

Physical & Chemical Properties

Molecular FormulaC19H26N2O5S
Molecular Weight394.49 g/mol
Purity97%+
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.)1984
Nitrogen Atoms2
Sulfur Atoms1

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