2-Ethynyl-5-methoxy-1,3-dimethylbenzene CAS 74331-73-0

Description

Compared with other compounds in its class, the molecular weight of 160.21 g/mol gives 2-Ethynyl-5-methoxy-1,3-dimethylbenzene distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

2-Ethynyl-5-methoxy-1,3-dimethylbenzene (CAS 74331-73-0), molecular formula C11H12O and molecular weight 160.21 g/mol, is a CATO reference standard with documented purity and traceability.

Owing to a hydroxyl group, an ether linkage, an aromatic ring system, 2-Ethynyl-5-methoxy-1,3-dimethylbenzene is typically off-white to pale yellow low-melting solid. Its solid-state physicochemical attributes — including a molecular weight of 160.21 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).

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

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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