Propyl stearate CAS 3634-92-2

Purity 97%+In StockPharmaceutical Standards
CAS No.3634-92-2
Molecular FormulaC21H42O2
Molecular Weight326.56 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Propyl stearate CAS 3634-92-2 chemical structure

Description

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.

Propyl stearate (CAS 3634-92-2), molecular formula C21H42O2 and molecular weight 326.56 g/mol, is a CATO reference standard with documented purity and traceability.

Propyl stearate (C21H42O2) contains a carboxylic acid group, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; 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.

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 FormulaC21H42O2
Molecular Weight326.56 g/mol
Purity97%+
StorageStore at room temperature
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityStable under recommended storage conditions
Degree of Unsaturation (DBE)1.0
CAS Registry Year (est.)1958

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Why CATO?