aaa (20R,23R,24S)-4a,23,24-Trimethylcholestane CAS 146276-33-7

Description

The occurrence of aaa (20R,23R,24S)-4a,23,24-Trimethylcholestane is closely related to an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

CATO supplies aaa (20R,23R,24S)-4a,23,24-Trimethylcholestane (CAS 146276-33-7), a certified reference material (molecular formula C30H54, MW 414.75 g/mol) for analytical method development and quality control.

Structurally, aaa (20R,23R,24S)-4a,23,24-Trimethylcholestane (C30H54) contains an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 414.75 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.

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

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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