Candesartan Cilexetil Impurity 18 CAS 886999-34-4

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Candesartan Cilexetil Impurity 18.

Candesartan Cilexetil Impurity 18 (CAS 886999-34-4), molecular formula C52H48N6O6 and molecular weight 852.97 g/mol, is a CATO reference standard with documented purity and traceability.

The molecular framework of Candesartan Cilexetil Impurity 18 (C52H48N6O6) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

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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