Quetiapine EP Impurity I CAS 329216-67-3

Description

Compared with other compounds in its class, the molecular weight of 339.45 g/mol gives Quetiapine EP Impurity I distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

Quetiapine EP Impurity I (CAS 329216-67-3) is a certified pharmaceutical impurity reference standard with the molecular formula C19H21N3OS and a molecular weight of 339.45 g/mol.

Structurally, Quetiapine EP Impurity I (C19H21N3OS) contains a steroid core, an amide group, sulfur-containing functionality, 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 339.45 g/mol, it falls into the moderately-high-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.

CATO manufactures Quetiapine EP Impurity I 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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