Description

3-Ethyl-2-Mercaptothieno[3,2-D]Pyrimidin-4(3H)-One is a high-purity, specialized heterocyclic compound that serves as a critical building block in advanced organic synthesis. Its unique fused thienopyrimidine 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 synthon for the research and development of new drug candidates, particularly in therapeutic areas requiring complex heterocyclic scaffolds.
• Agrochemical Research: Used in the synthesis of novel pesticides and herbicides, leveraging its thienopyrimidine core for biological activity.
• Material Science Precursor: Serves as a building block for organic electronic materials, such as semiconductors or light-emitting components, due to its conjugated system.
• Chemical Biology Probe Development: Employed in creating specialized molecular probes and inhibitors for studying enzyme mechanisms and biological pathways.
• Custom Synthesis & Contract Manufacturing: A crucial starting material for fine chemical manufacturers offering bespoke synthesis services to clients in life sciences.

Basic Information

Product Name	3-Ethyl-2-Mercaptothieno[3,2-D]Pyrimidin-4(3H)-One
CAS No.	338401-79-9
Molecular Formula	C9H8N2OS2
Molecular Weight	224.30 g/mol
Synonyms	3-Ethyl-2-mercaptothieno[3,2-d]pyrimidin-4(3H)-one; 3-Ethyl-2-thioxo-2,3-dihydrothieno[3,2-d]pyrimidin-4(1H)-one; Thieno[3,2-d]pyrimidine-4(3H)-one, 3-ethyl-2-mercapto-; 338401-79-9; 3-Ethyl-2-sulfanylidene-1,3-dihydrothieno[3,2-d]pyrimidin-4-one
EINECS	Contact for details

Quality Control

Our 3-Ethyl-2-Mercaptothieno[3,2-D]Pyrimidin-4(3H)-One is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation via spectroscopic methods, to ensure it meets the high standards required for research and synthesis. Certificates of Analysis (COA) detailing batch-specific results are available upon request to support your quality assurance and regulatory needs.

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, long-term storage under an inert atmosphere (e.g., nitrogen or argon) is recommended for optimal stability.

Specification

Item	Specification
Appearance	Off-white to light yellow crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
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.