Busulfan Impurity 13 CAS CATO-C4X-145513

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.CATO-C4X-145513
Molecular FormulaC11H23O7S2
Molecular WeightN/A
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Busulfan Impurity 13 CAS CATO-C4X-145513 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 354.41 g/mol gives Busulfan Impurity 13 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies Busulfan Impurity 13 (CAS CATO-C4X-145513), a pharmacopoeial impurity reference standard (molecular formula C11H23O7S2Na, MW 354.41 g/mol) used for the identification and quantification of trace impurities in APIs.

Structurally, Busulfan Impurity 13 (C11H23O7S2Na) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 0.5, corresponding to approximately 0 ring(s) or double-bond equivalent(s). With a molecular weight of 354.41 g/mol, it falls into the moderately-high-molecular-weight range.

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.

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

Physical & Chemical Properties

Molecular FormulaC11H23O7S2 Na
Molecular Weight354.41 g/mol
Purity97%+
StorageStore in a cool place (≤25°C), keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO
StabilityHygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)0.5
Sulfur Atoms2

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