Description

2,4-Dichloro-5,7-Dihydrothieno[3,4-D]Pyrimidine is a high-value heterocyclic building block and key synthetic intermediate in advanced organic chemistry. Its fused thienopyrimidine core structure makes it a versatile precursor for the development of novel pharmacologically active compounds and functional materials. This product is essential for research and development chemists in the pharmaceutical, agrochemical, and specialty chemical industries seeking to create new molecules with targeted properties.

Application

• Pharmaceutical Intermediate: A critical scaffold for the synthesis of potential drug candidates, particularly in kinase inhibitor and antiviral research.
• Agrochemical Synthesis: Used as a building block in the development of new herbicides, fungicides, and plant growth regulators.
• Material Science Research: Serves as a precursor for organic electronic materials, such as semiconductors or conductive polymers, due to its electron-rich thiophene moiety.
• Chemical Biology Probes: Employed in the design and synthesis of molecular probes for studying biological pathways and enzyme functions.
• Custom Synthesis & Contract Manufacturing: A key starting material for custom synthesis projects requiring complex heterocyclic frameworks.
• Academic & Industrial R&D: Fundamental research into novel chemical reactions and the exploration of new chemical space in medicinal chemistry.

Basic Information

Product Name	2,4-Dichloro-5,7-Dihydrothieno[3,4-D]Pyrimidine
CAS No.	74901-71-6
Molecular Formula	C6H4Cl2N2S
Molecular Weight	207.08 g/mol
Synonyms	2,4-Dichloro-5,7-dihydrothieno[3,4-d]pyrimidine; 5,7-Dihydrothieno[3,4-d]pyrimidine, 2,4-dichloro-; Thieno[3,4-d]pyrimidine, 2,4-dichloro-5,7-dihydro-; 2,4-Dichlorothieno[3,4-d]pyrimidine-5,7-dihydro; 74901-71-6; 2,4-Dichloro-5H,7H-thieno[3,4-d]pyrimidine
EINECS	Contact for details

Quality Control

Our 2,4-Dichloro-5,7-Dihydrothieno[3,4-D]Pyrimidine is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot is subjected to rigorous analytical testing, including HPLC, NMR, and GC-MS, to confirm identity and purity. Certificates of Analysis (COA) detailing all specifications are provided with every shipment. We support cGMP and ISO standards for intermediates destined for regulated pharmaceutical applications.

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 bases and oxidizing agents. For long-term storage, consider storing under an inert atmosphere to maintain stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.