Description

3-Ethyl-2-Mercapto-5,6-Dimethylthieno[2,3-D]Pyrimidin-4(3H)-One is a high-purity, heterocyclic organic compound featuring a fused thienopyrimidine core, which serves as a critical synthetic intermediate and building block in advanced chemical synthesis. Its unique molecular architecture makes it a valuable precursor for developing active pharmaceutical ingredients (APIs), agrochemicals, and functional materials. This compound is essential for research and development chemists, process engineers, and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries seeking to create novel molecules with specific biological or material properties.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of novel drug candidates, particularly those targeting central nervous system (CNS) disorders, anti-inflammatory agents, and kinase inhibitors.
• Agrochemical Synthesis: Used as a precursor in the development of new-generation herbicides, fungicides, and pesticides, leveraging its heterocyclic structure for bioactivity.
• Material Science Research: Serves as an organic precursor for creating advanced organic electronic materials, such as organic semiconductors or charge-transport layers.
• Chemical Research & Development: Employed in academic and industrial R&D labs for exploring new organic reactions, heterocyclic chemistry, and method development.
• Ligand and Catalyst Development: The mercapto and nitrogen-containing groups can be utilized to develop novel ligands for metal catalysis or coordination complexes.

Basic Information

Item	Details
Product Name	3-Ethyl-2-Mercapto-5,6-Dimethylthieno[2,3-D]Pyrimidin-4(3H)-One
CAS No.	59898-60-1
Molecular Formula	C10H12N2OS2
Molecular Weight	240.34 g/mol
Synonyms	3-Ethyl-2-mercapto-5,6-dimethylthieno[2,3-d]pyrimidin-4(3H)-one; 5,6-Dimethyl-3-ethyl-2-mercapto-3,4-dihydrothieno[2,3-d]pyrimidin-4-one; 3-Ethyl-5,6-dimethyl-2-sulfanylidene-1,3-dihydrothieno[2,3-d]pyrimidin-4-one; 59898-60-1; Thieno[2,3-d]pyrimidin-4(3H)-one, 3-ethyl-2-mercapto-5,6-dimethyl-; STK387107; AKOS005258213; DB-082006
EINECS	Contact for details

Quality Control

Every batch of 3-Ethyl-2-Mercapto-5,6-Dimethylthieno[2,3-D]Pyrimidin-4(3H)-One is manufactured under a strict quality management system. Our products undergo rigorous analytical testing, including HPLC, NMR, and MS, to ensure identity, purity, and consistency meet the high standards required for synthetic applications. Certificates of Analysis (COA) documenting all critical quality attributes are available upon request. We support compliance with relevant guidelines for use in regulated environments.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and 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 (e.g., nitrogen or argon) for long-term preservation. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference standard
Purity (HPLC)	≥ 98.0%
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm

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