Busulfan Impurity 4 CAS 42729-95-3

Purity >90%In StockPharmacopoeial Impurity Standards
CAS No.42729-95-3
Molecular FormulaC5H12O4S
Molecular Weight168.21 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Busulfan Impurity 4 CAS 42729-95-3 chemical structure

Description

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 process- or degradation-related impurity, Busulfan Impurity 4 (CAS 42729-95-3, C5H12O4S) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.

Busulfan Impurity 4 (C5H12O4S) 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 manufactures Busulfan Impurity 4 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 FormulaC5H12O4S
Molecular Weight168.21 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.)1969
Sulfur Atoms1

Related Busulfan Standards

Recommended Standards

Why CATO?