Description

4-Chloro-6,7-Dihydro-5H-Cyclopenta[4,5]Thieno[2,3-D]Pyrimidine is a high-value, heterocyclic organic building block of significant interest in advanced chemical synthesis. This compound matters as a versatile and critical intermediate for constructing complex molecular architectures, particularly in pharmaceutical research and development. It is primarily needed by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and specialty chemical industries for creating novel active ingredients and functional materials.

Application

This specialized chemical intermediate serves as a key precursor in several high-value synthetic pathways. Its primary applications include:

• Pharmaceutical Intermediate: Core scaffold for the synthesis of kinase inhibitors and other targeted therapeutic agents.
• Agrochemical Research: Building block for developing novel herbicides, fungicides, and plant growth regulators.
• Material Science: Precursor for organic electronic materials and ligands in catalytic systems.
• Chemical Biology: Used in the development of molecular probes and tool compounds for biological target validation.
• Custom Synthesis: Serves as a starting point for contract research organizations (CROs) and CDMOs for client-specific molecule development.

Basic Information

Product Name	4-Chloro-6,7-Dihydro-5H-Cyclopenta[4,5]Thieno[2,3-D]Pyrimidine
CAS No.	300816-22-2
Molecular Formula	C9H7ClN2S
Molecular Weight	210.68 g/mol
Synonyms	4-Chloro-5,6,7,8-tetrahydrocyclopenta[4,5]thieno[2,3-d]pyrimidine; 4-Chloro-6,7-dihydro-5H-cyclopenta[4,5]thieno[2,3-d]pyrimidine; 300816-22-2; 4-Chloro-5,6,7,8-tetrahydrocyclopentathienopyrimidine; Cyclopenta[4,5]thieno[2,3-d]pyrimidine, 4-chloro-6,7-dihydro-5H-; 4-Chloro-6,7-dihydro-5H-cyclopenta[4,5]thieno[2,3-d]pyrimidine
EINECS	Contact for details

Quality Control

Our production of 4-Chloro-6,7-Dihydro-5H-Cyclopenta[4,5]Thieno[2,3-D]Pyrimidine adheres to stringent internal quality standards to ensure batch-to-batch consistency and reliability for your critical research and development processes. All materials are characterized by modern analytical techniques including HPLC, GC, NMR, and mass spectrometry. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to support your quality and regulatory documentation needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Keep the container sealed to protect from moisture.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Related Substances (HPLC)	Total impurities ≤ 3.0%
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.