Description

2-Chloro-4-Methyl-6,7-Dihydro-5H-Cyclopenta[B]Pyridine is a high-value, halogenated heterocyclic building block essential for advanced organic synthesis. Its unique fused-ring structure containing a chlorine substituent makes it a critical intermediate for developing novel active pharmaceutical ingredients (APIs) and agrochemicals. This compound is primarily sought by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and specialty chemical industries for constructing complex molecular architectures.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of novel drug candidates, particularly for central nervous system (CNS) and anti-inflammatory targets.
• Agrochemical Synthesis: Building block for developing new-generation herbicides, fungicides, and insecticides with enhanced efficacy.
• Ligand & Catalyst Development: Used to create specialized nitrogen-containing ligands for transition metal catalysis.
• Material Science Research: Intermediate for synthesizing organic electronic materials and advanced polymers.
• Chemical Biology Probes: Serves as a core structure for developing molecular probes and enzyme inhibitors in biochemical research.
• Custom Synthesis & Contract Manufacturing: Supplied to CDMOs for use in custom synthesis projects and scale-up campaigns.

Basic Information

Product Name	2-Chloro-4-Methyl-6,7-Dihydro-5H-Cyclopenta[B]Pyridine
CAS No.	83939-58-6
Molecular Formula	C9H10ClN
Molecular Weight	167.64 g/mol
Synonyms	2-Chloro-4-methyl-6,7-dihydro-5H-cyclopenta[b]pyridine; 4-Methyl-2-chloro-6,7-dihydro-5H-cyclopenta[b]pyridine; 2-Chloro-4-methyl-5,6,7,8-tetrahydroquinoline; 2-Chloro-4-methyl-5,6,7,8-tetrahydroquinoline (fused ring system); Cyclopenta[b]pyridine, 2-chloro-4-methyl-6,7-dihydro-5H-; 83939-58-6; 2-Chloro-4-methyl-6,7-dihydro-5H-cyclopenta[b]pyridin
EINECS	Contact for details

Quality Control

Our 2-Chloro-4-Methyl-6,7-Dihydro-5H-Cyclopenta[B]Pyridine is manufactured under strict quality management systems. Every batch undergoes comprehensive analytical testing, including HPLC, GC, NMR, and mass spectrometry, to ensure identity, purity, and consistency. We provide detailed Certificates of Analysis (COA) with each shipment, documenting all critical quality attributes to support your regulatory and R&D requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). Keep away from incompatible materials such as strong oxidizing agents and strong bases.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Conforms to reference
Assay (HPLC)	≥ 98.0%
Related Substances (HPLC)	Total impurities ≤ 2.0%
Any single impurity	≤ 0.5%
Residual Solvents (GC)	Complies with ICH Q3C
Loss on Drying	≤ 0.5%

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