Description

Thieno[2,3-d]pyrimidin-4(1H)-one, 6-ethyl-2,3-dihydro-3-methyl-2-thioxo- (9Ci) is a high-value heterocyclic building block and advanced pharmaceutical intermediate. This compound is critical for research and development in medicinal chemistry, particularly in the synthesis of novel small-molecule therapeutics. It is primarily sought after by pharmaceutical R&D laboratories, agrochemical innovators, and specialty chemical manufacturers for constructing complex molecular architectures. Its defined structure offers a precise scaffold for developing compounds with targeted biological activity.

Application

• Pharmaceutical Intermediate: Serves as a key precursor in the synthesis of potential drug candidates targeting various enzymes and receptors.
• Medicinal Chemistry Research: Used as a core scaffold for structure-activity relationship (SAR) studies and library synthesis in drug discovery programs.
• Agrochemical Development: Employed in the research and synthesis of novel herbicides, fungicides, or insecticides that utilize the thienopyrimidinone core.
• Chemical Biology Probes: Acts as a starting material for creating tool compounds to study biological pathways and protein function.
• Organic Synthesis Building Block: Utilized in academic and industrial research for constructing complex heterocyclic systems and novel chemical entities.

Basic Information

Product Name	Thieno[2,3-d]pyrimidin-4(1H)-one, 6-ethyl-2,3-dihydro-3-methyl-2-thioxo- (9Ci)
CAS No.	733015-18-4
Molecular Formula	C9H10N2OS2
Molecular Weight	226.32 g/mol
Synonyms	6-Ethyl-3-methyl-2-thioxo-2,3-dihydro-1H-thieno[2,3-d]pyrimidin-4-one; 6-Ethyl-3-methyl-2-thioxo-2,3-dihydrothieno[2,3-d]pyrimidin-4(1H)-one; 733015-18-4; Thieno[2,3-d]pyrimidine-2,4(1H,3H)-dione, 6-ethyl-3-methyl-2-thioxo-; 6-Ethyl-3-methyl-2-sulfanylidene-1,3-dihydrothieno[2,3-d]pyrimidin-4-one
EINECS	Contact for details

Quality Control

Our production of Thieno[2,3-d]pyrimidin-4(1H)-one, 6-ethyl-2,3-dihydro-3-methyl-2-thioxo- (9Ci) adheres to stringent quality management systems. Every batch undergoes rigorous analytical testing, including HPLC for purity and NMR/LC-MS for structural confirmation, to ensure consistency and reliability for research applications. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with each shipment to support your quality and regulatory documentation needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (typically 15-25°C). Keep away from incompatible materials. For long-term storage, consider inert atmosphere conditions to maintain optimal stability.

Specification

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