Description

4-Chlorothieno[3,2-D]Pyrimidine is a high-value heterocyclic building block and key synthetic intermediate in advanced organic chemistry. This compound matters for its crucial role in constructing complex molecular architectures, particularly in the development of novel active pharmaceutical ingredients (APIs). Pharmaceutical researchers, agrochemical developers, and material scientists need it for creating new compounds with targeted biological or electronic properties.

Application

• Pharmaceutical Intermediate: A critical building block for the synthesis of kinase inhibitors and other small-molecule drug candidates targeting various diseases.
• Agrochemical Research: Used in the development of new herbicides, fungicides, and insecticides, leveraging the thienopyrimidine scaffold's bioactivity.
• Material Science Precursor: Serves as a starting material for creating organic semiconductors, ligands for metal-organic frameworks (MOFs), and specialty polymers.
• Chemical Biology Probe: Employed in medicinal chemistry to explore structure-activity relationships (SAR) and develop chemical probes for biological targets.
• Custom Synthesis & Contract Manufacturing: Supplied to CDMOs (Contract Development and Manufacturing Organizations) for custom synthesis projects and scale-up processes.

Basic Information

Product Name	4-Chlorothieno[3,2-D]Pyrimidine
CAS No.	16269-66-2
Molecular Formula	C6H3ClN2S
Molecular Weight	170.62 g/mol
Synonyms	4-Chlorothieno[3,2-d]pyrimidine; Thieno[3,2-d]pyrimidine, 4-chloro-; 4-Chloro-thieno[3,2-d]pyrimidine; 4-Chloro-thieno[3,2-d]pyrimidin; 16269-66-2; 4-Chlorothienopyrimidine; 4-Cl-Thieno[3,2-d]pyrimidine
EINECS	Contact for details

Quality Control

Our 4-Chlorothieno[3,2-D]Pyrimidine is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and NMR/IR for structural confirmation, to ensure it meets the high standards required for research and development. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available for every shipment upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from incompatible materials such as strong bases and strong oxidizing agents. For long-term storage, consider storing under an inert atmosphere to maintain product integrity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Melting Point	Contact for details
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.