(4<I>R</I>,4′<I>R</I>,5<I>S</I>,5′<I>S</I>)-2,2′-( 1-Methylethylidene CAS 157904-67-1

Description

Compared with other compounds in its class, the molecular weight of 486.60 g/mol gives (4<I>R</I>,4′<I>R</I>,5<I>S</I>,5′<I>S</I>)-2,2′-( 1-Methylethylidene distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

(4<I>R</I>,4′<I>R</I>,5<I>S</I>,5′<I>S</I>)-2,2′-( 1-Methylethylidene (CAS 157904-67-1), molecular formula C33H30N2O2 and molecular weight 486.60 g/mol, is a CATO reference standard with documented purity and traceability.

Structurally, (4<I>R</I>,4′<I>R</I>,5<I>S</I>,5′<I>S</I>)-2,2′-( 1-Methylethylidene (C33H30N2O2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 20.0, corresponding to approximately 20 ring(s) or double-bond equivalent(s). With a molecular weight of 486.60 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 is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.

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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