Description

2-(Chloromethyl)-6-Ethylthieno[2,3-D]Pyrimidin-4(3H)-One is a high-value heterocyclic building block and key synthetic intermediate in advanced organic chemistry. This compound is critical for research and development in the pharmaceutical sector, where it serves as a versatile scaffold for constructing novel active molecules. It is primarily sought after by pharmaceutical R&D laboratories, agrochemical innovators, and fine chemical manufacturers engaged in the synthesis of complex, biologically active compounds.

Application

• Pharmaceutical Intermediate: A crucial precursor in the synthesis of novel drug candidates, particularly for kinase inhibitors and other targeted therapies.
• Agrochemical Research: Used as a building block for developing new active ingredients in herbicides, fungicides, and insecticides.
• Chemical Biology & Proteomics: Serves as a versatile scaffold for designing molecular probes and tool compounds to study biological pathways.
• Material Science Research: Investigated as a monomer or precursor for specialty polymers and advanced organic electronic materials.
• Custom Synthesis & Contract Manufacturing: Supplied to CDMOs (Contract Development and Manufacturing Organizations) for the production of client-specific target molecules.

Basic Information

Product Name	2-(Chloromethyl)-6-Ethylthieno[2,3-D]Pyrimidin-4(3H)-One
CAS No.	91225-68-2
Molecular Formula	C9H9ClN2OS
Molecular Weight	228.70 g/mol
Synonyms	6-Ethyl-2-(chloromethyl)thieno[2,3-d]pyrimidin-4(3H)-one; 2-(Chloromethyl)-6-ethyl-3,4-dihydrothieno[2,3-d]pyrimidin-4-one; 6-Ethyl-2-(chloromethyl)-4H-thieno[2,3-d]pyrimidin-4-one; 91225-68-2; Thieno[2,3-d]pyrimidin-4(3H)-one, 2-(chloromethyl)-6-ethyl-
EINECS	Contact for details

Quality Control

Our 2-(Chloromethyl)-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 is supported by a comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles. We adhere to cGMP (current Good Manufacturing Practice) standards where applicable, ensuring the material is suitable for demanding research and pre-clinical development phases.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). Keep away from strong acids and incompatible organic solvents. The container should be kept tightly sealed to protect from moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference standard
Assay (HPLC)	≥ 98.0%
Related Substances (HPLC)	Any single impurity ≤ 0.5%; Total impurities ≤ 1.5%
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.