Description

6-Ethylthieno[2,3-D]Pyrimidin-4(3H)-One is a high-purity heterocyclic organic compound, specifically a thienopyrimidinone derivative, serving as a critical advanced pharmaceutical intermediate (API intermediate) and a versatile scaffold in medicinal chemistry. Its core value lies in enabling the synthesis of novel drug candidates, particularly in therapeutic areas requiring targeted molecular frameworks. This compound is essential for research institutions and pharmaceutical manufacturers engaged in the development of small molecule drugs, agrochemicals, and other fine chemicals where precise molecular architecture is paramount.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of active pharmaceutical ingredients (APIs) for various therapeutic applications.
• Medicinal Chemistry Research: Serves as a core scaffold for designing and synthesizing novel drug candidates in high-throughput screening and lead optimization programs.
• Agrochemical Development: Used in the research and production of advanced pesticides and herbicides, leveraging its heterocyclic structure for biological activity.
• Organic Synthesis Reagent: Acts as a versatile precursor for constructing complex heterocyclic systems in academic and industrial R&D laboratories.
• Biochemical Tool Compound: Potential use in developing probes and inhibitors for studying enzymatic pathways and biological targets.

Basic Information

Product Name	6-Ethylthieno[2,3-D]Pyrimidin-4(3H)-One
CAS No.	18593-51-6
Molecular Formula	C8H8N2OS
Molecular Weight	180.23 g/mol
Synonyms	6-Ethyl-4H-thieno[2,3-d]pyrimidin-4-one; 4(3H)-Thieno[2,3-d]pyrimidinone, 6-ethyl-; 6-Ethyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidine; 6-Ethyl-3,4-dihydro-4-oxothieno[2,3-d]pyrimidine; 6-Ethylthieno[2,3-d]pyrimidin-4-ol; 18593-51-6; Thienopyrimidinone derivative
EINECS	Contact for details

Quality Control

Our 6-Ethylthieno[2,3-D]Pyrimidin-4(3H)-One is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including HPLC for assay and impurity profiling, to meet the stringent requirements of pharmaceutical and research applications. A detailed Certificate of Analysis (COA) is provided with every shipment, documenting identity, purity, and all relevant specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (typically 15-25°C). Keep away from incompatible materials and sources of ignition.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
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.