Finasteride Impurity 3-one-4-aza-5-androstene-17β-carboxylate methyl ester CAS 104214-18-8

Description

The occurrence of Finasteride Impurity 3-one-4-aza-5-androstene-17β-carboxylate methyl ester 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.

Finasteride Impurity 3-one-4-aza-5-androstene-17β-carboxylate methyl ester (CAS 104214-18-8), molecular formula C20H29NO3 and molecular weight 331.45 g/mol, is a CATO reference standard with documented purity and traceability.

Based on its molecular formula C20H29NO3, Finasteride Impurity 3-one-4-aza-5-androstene-17β-carboxylate methyl ester contains a steroid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 331.45 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

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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