Busulfan Impurity 3 CAS 26978-64-3

Purity >90%In StockPharmacopoeial Impurity Standards
CAS No.26978-64-3
Molecular FormulaC4H10O4S
Molecular Weight154.18 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Busulfan Impurity 3 CAS 26978-64-3 chemical structure

Description

Busulfan Impurity 3 (C4H10O4S) contains a carbohydrate-derived structure, a sulfone group. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions.

CATO supplies Busulfan Impurity 3 (CAS 26978-64-3), a pharmacopoeial impurity reference standard (molecular formula C4H10O4S, MW 154.18 g/mol) used for the identification and quantification of trace impurities in APIs.

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), Busulfan Impurity 3 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 FormulaC4H10O4S
Molecular Weight154.18 g/mol
Purity>90%
StorageStore at 2-8°C, keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO, water
StabilityHygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)0.0
CAS Registry Year (est.)1964
Sulfur Atoms1

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