5Alpha-Androstane CAS 438-22-2

Purity >95%In StockPharmaceutical Standards
CAS No.438-22-2
Molecular FormulaC19H32
Molecular Weight260.46 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

5Alpha-Androstane CAS 438-22-2 chemical structure

Description

The occurrence of 5Alpha-Androstane is closely related to an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

5Alpha-Androstane (CAS 438-22-2) is a high-purity analytical reference standard with the molecular formula C19H32 and a molecular weight of 260.46 g/mol.

5Alpha-Androstane (C19H32) contains an aromatic ring system. Its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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 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

Molecular FormulaC19H32
Molecular Weight260.46 g/mol
Purity>95%
StorageStore at room temperature
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate
StabilityStable under recommended storage conditions
Degree of Unsaturation (DBE)4.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1957

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