多奈哌齐杂质18(非对映异构体混合物) CAS 2069210-84-8

Description

The occurrence of 多奈哌齐杂质18(非对映异构体混合物) is closely related to a steroid core, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

CATO supplies 多奈哌齐杂质18(非对映异构体混合物) (CAS 2069210-84-8), a pharmacopoeial impurity reference standard (molecular formula C24H29NO3, MW 379.49 g/mol) used for the identification and quantification of trace impurities in APIs.

Structurally, 多奈哌齐杂质18(非对映异构体混合物) (C24H29NO3) contains a steroid core, an amide group, 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 379.49 g/mol, it falls into the moderately-high-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.

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

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