Description

4-[(2-Chlorobenzyl)Sulfanyl]-5,6-Dimethylthieno[2,3-D]Pyrimidine is a high-purity, advanced pharmaceutical intermediate and research chemical. This compound is valued for its role as a key synthetic building block in the development of novel active pharmaceutical ingredients (APIs) and agrochemicals. It is primarily sought by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and fine chemical industries for constructing complex molecular architectures.

Application

• Pharmaceutical Intermediate: Serves as a critical precursor in the synthesis of potential drug candidates, particularly in kinase inhibitor research and other targeted therapeutic areas.
• Agrochemical Research: Used in the development of new herbicides, fungicides, and pesticides, leveraging its heterocyclic core for bioactivity.
• Chemical Biology Probe: Employed in academic and industrial research as a tool compound to study biological pathways and enzyme functions.
• Material Science Research: Investigated as a monomer or precursor for specialty polymers and organic electronic materials due to its fused ring system.
• Custom Synthesis & Contract Manufacturing: Supplied to CDMOs (Contract Development and Manufacturing Organizations) for client-specific synthesis projects requiring this precise molecular scaffold.

Basic Information

Product Name	4-[(2-Chlorobenzyl)Sulfanyl]-5,6-Dimethylthieno[2,3-D]Pyrimidine
CAS No.	433965-92-5
Molecular Formula	C16H15ClN2S2
Molecular Weight	334.88 g/mol
Synonyms	4-[(2-Chlorophenyl)methyl]sulfanyl-5,6-dimethylthieno[2,3-d]pyrimidine; 5,6-Dimethyl-4-[(2-chlorobenzyl)thio]thieno[2,3-d]pyrimidine; Thieno[2,3-d]pyrimidine, 4-[(2-chlorobenzyl)thio]-5,6-dimethyl-; 4-(2-Chlorobenzylthio)-5,6-dimethylthieno[2,3-d]pyrimidine; CAS 433965-92-5
EINECS	Contact for details

Quality Control

Every batch of 4-[(2-Chlorobenzyl)Sulfanyl]-5,6-Dimethylthieno[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) is provided with each shipment, detailing all specifications and test results.

Storage

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

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference standard
Purity (HPLC)	≥ 98.0%
Related Substances (HPLC)	Any single impurity ≤ 0.5%, Total impurities ≤ 2.0%
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.