3-Ethyl-2-sulfanyl-5-(thiophen-2-yl)-3h,4h-thieno[2,3-d]pyrimidin-4-one CAS 257870-40-9

Description

The occurrence of 3-Ethyl-2-sulfanyl-5-(thiophen-2-yl)-3h,4h-thieno[2,3-d]pyrimidin-4-one is closely related to a nitrogen-containing heterocyclic scaffold, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

3-Ethyl-2-sulfanyl-5-(thiophen-2-yl)-3h,4h-thieno[2,3-d]pyrimidin-4-one (CAS 257870-40-9), molecular formula C12H10N2OS3 and molecular weight 294.42 g/mol, is a CATO reference standard with documented purity and traceability.

Owing to a nitrogen-containing heterocyclic scaffold, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, 3-Ethyl-2-sulfanyl-5-(thiophen-2-yl)-3h,4h-thieno[2,3-d]pyrimidin-4-one is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 294.42 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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