Tofacitinib Impurity 39 CAS 2459302-80-6

Description

The occurrence of Tofacitinib Impurity 39 is closely related to a nitrogen-containing heterocyclic scaffold, a nitrile group in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

Tofacitinib Impurity 39 (CAS 2459302-80-6) is a certified pharmaceutical impurity reference standard with the molecular formula C20H25N5 and a molecular weight of 335.45 g/mol.

Owing to a nitrogen-containing heterocyclic scaffold, a nitrile group, Tofacitinib Impurity 39 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 335.45 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).

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 Tofacitinib Impurity 39 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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