3-Ethyl-5-methyl-2-sulfanyl-3h,4h-thieno[2,3-d]pyrimidin-4-one CAS 926261-32-7

Purity 97%+In StockPharmaceutical Standards
CAS No.926261-32-7
Molecular FormulaC9H10N2OS2
Molecular Weight226.32 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

3-Ethyl-5-methyl-2-sulfanyl-3h,4h-thieno[2,3-d]pyrimidin-4-one CAS 926261-32-7 chemical structure

Description

CATO supplies 3-Ethyl-5-methyl-2-sulfanyl-3h,4h-thieno[2,3-d]pyrimidin-4-one (CAS 926261-32-7), a certified reference material (molecular formula C9H10N2OS2, MW 226.32 g/mol) for analytical method development and quality control.

Owing to a nitrogen-containing heterocyclic scaffold, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, 3-Ethyl-5-methyl-2-sulfanyl-3h,4h-thieno[2,3-d]pyrimidin-4-one is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 226.32 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.

As a certified reference material (CRM), 3-Ethyl-5-methyl-2-sulfanyl-3h,4h-thieno[2,3-d]pyrimidin-4-one 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 FormulaC9H10N2OS2
Molecular Weight226.32 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)6.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1987
Nitrogen Atoms2
Sulfur Atoms2

Recommended Standards

Why CATO?