Tofacitinib Impurity 87 CAS 4124-41-8

Description

Compared with other compounds in its class, the molecular weight of 326.39 g/mol gives Tofacitinib Impurity 87 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies Tofacitinib Impurity 87 (CAS 4124-41-8), a pharmacopoeial impurity reference standard (molecular formula C14H14O5S2, MW 326.39 g/mol) used for the identification and quantification of trace impurities in APIs.

Structurally, Tofacitinib Impurity 87 (C14H14O5S2) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 326.39 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.

As a certified reference material (CRM), Tofacitinib Impurity 87 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

Physical & Chemical Properties

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