Tiotropium Bromide EP Impurity A Sodium CAS 877467-46-4

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.877467-46-4
Molecular FormulaC10H7O3S2
Molecular WeightN/A
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Tiotropium Bromide EP Impurity A Sodium CAS 877467-46-4 chemical structure

Description

CATO supplies Tiotropium Bromide EP Impurity A Sodium (CAS 877467-46-4), a pharmacopoeial impurity reference standard (molecular formula C10H7O3S2Na, MW 262.27 g/mol) used for the identification and quantification of trace impurities in APIs.

Based on its molecular formula C10H7O3S2Na, Tiotropium Bromide EP Impurity A Sodium contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 262.27 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).

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), Tiotropium Bromide EP Impurity A Sodium 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 FormulaC10H7O3S2 Na
Molecular Weight262.27 g/mol
Purity97%+
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)7.5
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1987
Sulfur Atoms2

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