Description

4-Chloro-2-Chloromethyl-5,6,7,8-Tetrahydro-Benzo[4,5]Thieno[2,3-D]Pyrimidine is a high-value, multi-functional heterocyclic building block of significant interest in advanced organic synthesis. Its complex fused-ring structure, featuring both pyrimidine and thiophene moieties, makes it a critical intermediate for constructing novel molecular architectures. This compound is primarily sought after by research and development teams in the pharmaceutical and agrochemical industries for the development of new active ingredients.

Application

• Pharmaceutical Intermediate: Serves as a key precursor in the synthesis of novel drug candidates, particularly for central nervous system (CNS) and oncology targets.
• Agrochemical Research: Used in the development of new herbicides, fungicides, and insecticides due to its bioactive heterocyclic core.
• Material Science: Acts as a building block for creating specialized organic electronic materials and ligands for catalysis.
• Academic & Contract Research: Employed in universities and CROs for methodological studies and the exploration of new chemical spaces.
• Custom Synthesis: A starting point for the contract manufacturing of complex, proprietary molecules for client-specific applications.

Basic Information

Item	Details
Product Name	4-Chloro-2-Chloromethyl-5,6,7,8-Tetrahydro-Benzo[4,5]Thieno[2,3-D]Pyrimidine
CAS No.	88203-17-2
Molecular Formula	C₁₂H₁₀Cl₂N₂S
Molecular Weight	285.19 g/mol
Synonyms	4-Chloro-2-(chloromethyl)-5,6,7,8-tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidine; 2-(Chloromethyl)-4-chloro-5,6,7,8-tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidine; 88203-17-2; Benzo[4,5]thieno[2,3-d]pyrimidine, 4-chloro-2-(chloromethyl)-5,6,7,8-tetrahydro-; Tetrahydrobenzothienopyrimidine derivative
EINECS	Contact for details

Quality Control

Every batch of 4-Chloro-2-Chloromethyl-5,6,7,8-Tetrahydro-Benzo[4,5]Thieno[2,3-D]Pyrimidine is manufactured under strict quality management systems. Our products undergo 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 each shipment to guarantee compliance with your research and development requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at controlled room temperature (typically 15-25°C). Keep away from incompatible materials such as strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference standard
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.