Sodium Cromoglicate Impurity 18 CAS CATO-C4X-201118

Description

Compared with other compounds in its class, the molecular weight of 424.36 g/mol gives Sodium Cromoglicate Impurity 18 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies Sodium Cromoglicate Impurity 18 (CAS CATO-C4X-201118), a pharmacopoeial impurity reference standard (molecular formula C22H16O9, MW 424.36 g/mol) used for the identification and quantification of trace impurities in APIs.

Based on its molecular formula C22H16O9, Sodium Cromoglicate Impurity 18 contains a flavonoid core, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 424.36 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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

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