Description

2-(Chloromethyl)-5-Methylthieno[2,3-D]Pyrimidin-4(3H)-One is a high-purity, advanced pharmaceutical intermediate characterized by its unique thienopyrimidine scaffold. This compound is of significant commercial value for its role as a critical building block in the synthesis of novel active pharmaceutical ingredients (APIs). It is primarily sought by research institutions and manufacturers in the pharmaceutical and agrochemical industries for developing new therapeutic and crop protection agents.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of novel drug candidates, particularly those targeting kinase inhibition and other enzymatic pathways.
• Agrochemical Research: Used in the development of new herbicides and fungicides, leveraging its heterocyclic structure for bioactivity.
• Chemical Synthesis Building Block: Serves as a versatile scaffold for medicinal chemistry and structure-activity relationship (SAR) studies.
• Academic & Contract Research: Employed in university and CRO laboratories for exploratory research in organic and medicinal chemistry.
• Process Development: Utilized in scale-up and optimization studies for the commercial production of target molecules.

Basic Information

Product Name	2-(Chloromethyl)-5-Methylthieno[2,3-D]Pyrimidin-4(3H)-One
CAS No.	568577-81-1
Molecular Formula	C9H7ClN2OS
Molecular Weight	226.68 g/mol
Synonyms	5-Methyl-2-(chloromethyl)thieno[2,3-d]pyrimidin-4(3H)-one; 2-(Chloromethyl)-5-methyl-3H-thieno[2,3-d]pyrimidin-4-one; 4(3H)-Thieno[2,3-d]pyrimidinone, 2-(chloromethyl)-5-methyl-; Thieno[2,3-d]pyrimidine derivative 568577-81-1
EINECS	Contact for details

Quality Control

Every batch of 2-(Chloromethyl)-5-Methylthieno[2,3-D]Pyrimidin-4(3H)-One is manufactured under strict quality management systems. Our products undergo rigorous analytical testing, including HPLC, NMR, and MS, to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing all specifications are provided with each shipment and are available upon request.

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 hygroscopic nature, the container must be kept tightly sealed to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Conforms to reference
Purity (HPLC)	≥ 98.0%
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.