Ethyl 2-[(3,4-dimethoxyphenyl)methyl]-5-methyl-4-oxo-3h,4h-thieno[2,3-d]pyrimidine-6-carboxylate CAS 743439-33-0

Description

Compared with other compounds in its class, the molecular weight of 388.44 g/mol gives Ethyl 2-[(3,4-dimethoxyphenyl)methyl]-5-methyl-4-oxo-3h,4h-thieno[2,3-d]pyrimidine-6-carboxylate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

Ethyl 2-[(3,4-dimethoxyphenyl)methyl]-5-methyl-4-oxo-3h,4h-thieno[2,3-d]pyrimidine-6-carboxylate (CAS 743439-33-0), molecular formula C19H20N2O5S and molecular weight 388.44 g/mol, is a CATO reference standard with documented purity and traceability.

Structurally, Ethyl 2-[(3,4-dimethoxyphenyl)methyl]-5-methyl-4-oxo-3h,4h-thieno[2,3-d]pyrimidine-6-carboxylate (C19H20N2O5S) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 388.44 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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.

CATO manufactures Ethyl 2-[(3,4-dimethoxyphenyl)methyl]-5-methyl-4-oxo-3h,4h-thieno[2,3-d]pyrimidine-6-carboxylate under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.

Physical & Chemical Properties

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