Furfural impurity 4 CAS CATO-C4X-24884

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.CATO-C4X-24884
Molecular FormulaC6H6O4
Molecular Weight142.11 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Furfural impurity 4 CAS CATO-C4X-24884 chemical structure

Description

CATO manufactures Furfural 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.

CATO supplies Furfural impurity 4 (CAS CATO-C4X-24884), a pharmacopoeial impurity reference standard (molecular formula C6H6O4, MW 142.11 g/mol) used for the identification and quantification of trace impurities in APIs.

Structurally, Furfural impurity 4 (C6H6O4) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 142.11 g/mol, it falls into the low-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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.

Physical & Chemical Properties

Molecular FormulaC6H6O4
Molecular Weight142.11 g/mol
Purity97%+
StorageStore at 2-8°C, keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO, water
StabilityMay oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)4.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present

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