Description

2-Mercapto-3-Methyl-3H-Thieno[2,3-D]Pyrimidin-4-One is a high-purity, specialized heterocyclic compound that serves as a critical building block in advanced organic synthesis. Its unique fused thienopyrimidinone structure makes it a valuable intermediate for developing novel active pharmaceutical ingredients (APIs) and functional materials. This product is essential for research and development chemists in the pharmaceutical, agrochemical, and material science industries seeking to create new molecules with targeted properties.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of novel drug candidates, particularly for therapeutic areas requiring complex heterocyclic scaffolds.
• Agrochemical Research: Used in the development of new pesticides and herbicides, where the thienopyrimidinone core can contribute to specific biological activity.
• Material Science: Serves as a building block for organic electronic materials, such as semiconductors or light-emitting components, due to its conjugated system.
• Chemical Synthesis: Acts as a versatile reagent for constructing complex molecular architectures in academic and industrial research settings.
• Ligand & Catalyst Development: Potential use in designing novel ligands for metal catalysis or as a core structure for organocatalysts.

Basic Information

Product Name	2-Mercapto-3-Methyl-3H-Thieno[2,3-D]Pyrimidin-4-One
CAS No.	554423-03-9
Molecular Formula	C7H6N2OS2
Molecular Weight	198.27 g/mol
Synonyms	3-Methyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidine-2-thiol; 3-Methyl-2-thioxo-2,3-dihydrothieno[2,3-d]pyrimidin-4(1H)-one; 2-Mercapto-3-methylthieno[2,3-d]pyrimidin-4(3H)-one; Thieno[2,3-d]pyrimidine-2-thiol, 3-methyl-4-oxo-3,4-dihydro-; CAS 554423-03-9
EINECS	Contact for details

Quality Control

Our 2-Mercapto-3-Methyl-3H-Thieno[2,3-D]Pyrimidin-4-One is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation via spectroscopic methods (NMR, IR), to ensure it meets exacting standards for research and production use. A comprehensive Certificate of Analysis (COA) detailing purity, impurities, and physical characteristics is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at a controlled room temperature (15-25°C). Due to its sensitivity to oxidation, it is recommended to store the product under an inert atmosphere for long-term preservation. Keep away from heat and incompatible materials.

Specification

Item	Specification
Appearance	Off-white to light yellow crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.