4,4'-Oxybis(ethynylbenzene) CAS 21368-80-9

Description

The occurrence of 4,4'-Oxybis(ethynylbenzene) is closely related to a hydroxyl group, an ether linkage, a polycyclic aromatic system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

CATO supplies 4,4'-Oxybis(ethynylbenzene) (CAS 21368-80-9), a certified reference material (molecular formula C16H10O, MW 218.25 g/mol) for analytical method development and quality control.

Owing to a hydroxyl group, an ether linkage, a polycyclic aromatic system, 4,4'-Oxybis(ethynylbenzene) is typically pale yellow to yellow low-melting solid. Its solid-state physicochemical attributes — including a molecular weight of 218.25 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).

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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