Description

2,4-Dichlorobenzo[4,5]thieno[2,3-d]pyrimidine is a high-value, heterocyclic organic compound featuring a fused thienopyrimidine core, which serves as a critical synthetic intermediate in advanced chemical synthesis. Its molecular architecture makes it an essential building block for developing novel active pharmaceutical ingredients (APIs) and functional materials. This compound is primarily sought after by research institutions and industrial manufacturers in the pharmaceutical, agrochemical, and specialty chemical sectors for creating compounds with targeted biological or electronic properties.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of novel drug candidates, particularly those targeting kinase inhibition or other enzymatic pathways.
• Agrochemical Research: Used in the development of new herbicides, fungicides, or pesticides, leveraging its heterocyclic structure for bioactivity.
• Material Science: Serves as a building block for organic electronic materials, such as organic semiconductors or light-emitting diodes (OLEDs).
• Chemical Synthesis: Employed in academic and industrial R&D for constructing complex fused-ring systems and exploring new chemical spaces.
• Dye & Pigment Industry: Potential intermediate for synthesizing specialized dyes and pigments due to its stable, conjugated system.

Basic Information

Item	Detail
Product Name	2,4-Dichlorobenzo[4,5]thieno[2,3-d]pyrimidine
CAS No.	76872-40-7
Molecular Formula	C10H4Cl2N2S
Molecular Weight	255.12 g/mol
Synonyms	2,4-Dichlorothieno[2',3':4,5]benzo[1,2-d]pyrimidine; 2,4-Dichlorobenzo[4,5]thieno[2,3-d]pyrimidine; 2,4-Dichloro-benzo[4,5]thieno[2,3-d]pyrimidine; Benzo[4,5]thieno[2,3-d]pyrimidine, 2,4-dichloro-; 76872-40-7; Thienopyrimidine derivative
EINECS	Contact for details

Quality Control

Every batch of 2,4-Dichlorobenzo[4,5]thieno[2,3-d]pyrimidine is manufactured under a strict quality management system. Our products undergo rigorous analytical testing, including HPLC, NMR, and mass spectrometry, to ensure high purity and consistent lot-to-lot quality. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with each shipment to support your quality assurance and regulatory needs.

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 (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 10 ppm

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