Thioctic acid impurity 57 CAS CATO-C4X-152657

Description

Compared with other compounds in its class, the molecular weight of 204.69 g/mol gives Thioctic acid impurity 57 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies Thioctic acid impurity 57 (CAS CATO-C4X-152657), a pharmacopoeial impurity reference standard (molecular formula C10H17ClO2, MW 204.69 g/mol) used for the identification and quantification of trace impurities in APIs.

Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, Thioctic acid impurity 57 is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 204.69 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.

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.

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

Why CATO?

• ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
• 130,000+ catalog items in stock, COA supplied with every batch
• Worldwide shipping with full export documentation (HS code guidance available)
• Technical support: +86 18665070610 / Nicole.chen@cato-chem.com