(4S,5S)-Ethyl 5-ethoxy-2,4-dimethyl-4,5-dihydrofuran-3-carboxylate CAS 189079-04-7

Description

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.

(4S,5S)-Ethyl 5-ethoxy-2,4-dimethyl-4,5-dihydrofuran-3-carboxylate (CAS 189079-04-7), molecular formula C11H18O4 and molecular weight 214.26 g/mol, is a CATO reference standard with documented purity and traceability.

Structurally, (4S,5S)-Ethyl 5-ethoxy-2,4-dimethyl-4,5-dihydrofuran-3-carboxylate (C11H18O4) contains a carboxylic acid group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 3.0, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 214.26 g/mol, it falls into the medium-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.

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.

Physical & Chemical Properties

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