Ethyl 2,5-dimethyl-4-oxo-2-phenyl-1,2,3,4-tetrahydrothieno[3,4-d]pyrimidine-7-carboxylate CAS 370852-89-4

Purity 97%+In StockPharmaceutical Standards
CAS No.370852-89-4
Molecular FormulaC17H18N2O3S
Molecular Weight330.40 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Ethyl 2,5-dimethyl-4-oxo-2-phenyl-1,2,3,4-tetrahydrothieno[3,4-d]pyrimidine-7-carboxylate CAS 370852-89-4 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 330.40 g/mol gives Ethyl 2,5-dimethyl-4-oxo-2-phenyl-1,2,3,4-tetrahydrothieno[3,4-d]pyrimidine-7-carboxylate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

Ethyl 2,5-dimethyl-4-oxo-2-phenyl-1,2,3,4-tetrahydrothieno[3,4-d]pyrimidine-7-carboxylate (CAS 370852-89-4), molecular formula C17H18N2O3S and molecular weight 330.40 g/mol, is a CATO reference standard with documented purity and traceability.

Ethyl 2,5-dimethyl-4-oxo-2-phenyl-1,2,3,4-tetrahydrothieno[3,4-d]pyrimidine-7-carboxylate (C17H18N2O3S) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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

As a certified reference material (CRM), Ethyl 2,5-dimethyl-4-oxo-2-phenyl-1,2,3,4-tetrahydrothieno[3,4-d]pyrimidine-7-carboxylate meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

Physical & Chemical Properties

Molecular FormulaC17H18N2O3S
Molecular Weight330.40 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)10.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2025
Nitrogen Atoms2
Sulfur Atoms1

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