Thioctic acid impurity 72 CAS CATO-C4X-152672

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.CATO-C4X-152672
Molecular FormulaC8H14O4S2
Molecular Weight238.32 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Thioctic acid impurity 72 CAS CATO-C4X-152672 chemical structure

Description

CATO supplies Thioctic acid impurity 72 (CAS CATO-C4X-152672), a pharmacopoeial impurity reference standard (molecular formula C8H14O4S2, MW 238.32 g/mol) used for the identification and quantification of trace impurities in APIs.

Owing to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, Thioctic acid impurity 72 is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 238.32 g/mol — guide the selection of appropriate sample preparation and analytical techniques.

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

Molecular FormulaC8H14O4S2
Molecular Weight238.32 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)2.0
Sulfur Atoms2

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