Diethyl 3,4-dimethylthieno[2,3-b]thiophene-2,5-dicarboxylate CAS 152487-69-9

Description

The occurrence of Diethyl 3,4-dimethylthieno[2,3-b]thiophene-2,5-dicarboxylate is closely related to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

Diethyl 3,4-dimethylthieno[2,3-b]thiophene-2,5-dicarboxylate (CAS 152487-69-9), molecular formula C14H16O4S2 and molecular weight 312.40 g/mol, is a CATO reference standard with documented purity and traceability.

Based on its molecular formula C14H16O4S2, Diethyl 3,4-dimethylthieno[2,3-b]thiophene-2,5-dicarboxylate contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 312.40 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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

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