3-(2,3-dimethylphenyl)-5,6-dimethyl-2-sulfanyl-3H,4H-thieno[2,3-d]pyrimidin-4-one CAS 743452-27-9

Purity 97%+In StockPharmaceutical Standards
CAS No.743452-27-9
Molecular FormulaC16H28N2OS2
Molecular Weight328.54 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

3-(2,3-dimethylphenyl)-5,6-dimethyl-2-sulfanyl-3H,4H-thieno[2,3-d]pyrimidin-4-one CAS 743452-27-9 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 328.54 g/mol gives 3-(2,3-dimethylphenyl)-5,6-dimethyl-2-sulfanyl-3H,4H-thieno[2,3-d]pyrimidin-4-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies 3-(2,3-dimethylphenyl)-5,6-dimethyl-2-sulfanyl-3H,4H-thieno[2,3-d]pyrimidin-4-one (CAS 743452-27-9), a certified reference material (molecular formula C16H28N2OS2, MW 328.54 g/mol) for analytical method development and quality control.

Based on its molecular formula C16H28N2OS2, 3-(2,3-dimethylphenyl)-5,6-dimethyl-2-sulfanyl-3H,4H-thieno[2,3-d]pyrimidin-4-one contains a nitrogen-containing heterocyclic scaffold, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 328.54 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

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

Molecular FormulaC16H28N2OS2
Molecular Weight328.54 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)4.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1986
Nitrogen Atoms2
Sulfur Atoms2

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