Tofacitinib Impurity 186 CAS 89600-66-8

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.89600-66-8
Molecular FormulaC6H10N2O
Molecular Weight126.16 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Tofacitinib Impurity 186 CAS 89600-66-8 chemical structure

Description

Tofacitinib Impurity 186 (CAS 89600-66-8) is a certified pharmaceutical impurity reference standard with the molecular formula C6H10N2O and a molecular weight of 126.16 g/mol.

Tofacitinib Impurity 186 (C6H10N2O) contains an amide group, a hydroxyl group, an ether linkage. Its physicochemical properties are representative of its class; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.

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

Molecular FormulaC6H10N2O
Molecular Weight126.16 g/mol
Purity>95%
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)3.0
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1982
Nitrogen Atoms2

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