Description

Thieno[2,3-D]Pyrimidin-4(3H)-One, 3,6-Diethyl- (9Ci) is a high-purity, heterocyclic organic compound belonging to the thienopyrimidinone class, serving as a critical advanced pharmaceutical intermediate. Its value lies in its role as a sophisticated building block for the synthesis of novel active pharmaceutical ingredients (APIs) and agrochemicals, enabling research and development in targeted therapeutic areas. This compound is essential for R&D chemists and process development scientists in the pharmaceutical, agrochemical, and fine chemical industries seeking to develop new molecules with enhanced biological activity.

Application

• Pharmaceutical Intermediate: A key synthetic precursor in the development of novel small-molecule drugs, particularly in oncology and antiviral research.
• Agrochemical Synthesis: Used in the research and production of new-generation herbicides, fungicides, and insecticides.
• Material Science Research: Investigated as a core structure for the development of organic electronic materials and specialty polymers.
• Biochemical Tool Compound: Serves as a scaffold in medicinal chemistry for structure-activity relationship (SAR) studies and high-throughput screening.
• Fine Chemical Synthesis: Employed in custom synthesis and contract manufacturing for complex, multi-step organic syntheses.

Basic Information

Product Name	Thieno[2,3-D]Pyrimidin-4(3H)-One, 3,6-Diethyl- (9Ci)
CAS No.	686333-99-3
Molecular Formula	C10H12N2OS
Molecular Weight	208.28 g/mol
Synonyms	3,6-Diethylthieno[2,3-d]pyrimidin-4(3H)-one; 3,6-Diethyl-3H-thieno[2,3-d]pyrimidin-4-one; 686333-99-3; Thieno[2,3-d]pyrimidin-4(3H)-one, 3,6-diethyl-; 3,6-Diethyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidine
EINECS	Contact for details

Quality Control

Our Thieno[2,3-D]Pyrimidin-4(3H)-One, 3,6-Diethyl- (9Ci) is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, NMR, and MS, to ensure identity, purity, and consistency. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with every shipment 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 area at a controlled room temperature (15-25°C). Keep away from incompatible materials. For long-term storage, consider an inert atmosphere to maintain optimal stability.

Specification

Item	Specification
Appearance	White to off-white 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%
Heavy Metals	< 20 ppm

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