Atrasentan Impurity 188 CAS CATO-C4X-3347188

Description

Compared with other compounds in its class, the molecular weight of 369.41 g/mol gives Atrasentan Impurity 188 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies Atrasentan Impurity 188 (CAS CATO-C4X-3347188), a pharmacopoeial impurity reference standard (molecular formula C21H23NO5, MW 369.41 g/mol) used for the identification and quantification of trace impurities in APIs.

Structurally, Atrasentan Impurity 188 (C21H23NO5) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 369.41 g/mol, it falls into the moderately-high-molecular-weight range. 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.

CATO manufactures Atrasentan Impurity 188 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

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