Description

Cyclopentene, 1-Bromo-5-Methyl- (9Ci) CAS NO 482344-18-3 is a specialized halogenated cyclopentene derivative, serving as a versatile and valuable building block in advanced organic synthesis. Its structure, featuring both a bromine substituent and a methyl group on the cyclopentene ring, makes it a critical intermediate for constructing complex molecular architectures. This compound is primarily utilized by research chemists and process development scientists in the pharmaceutical, agrochemical, and materials science industries to introduce functionalized cyclopentyl motifs into target molecules.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of novel active pharmaceutical ingredients (APIs), particularly those containing functionalized cyclopentane or cyclopentene cores.
• Agrochemical Synthesis: Used in the research and development of new herbicides, fungicides, and insecticides where the bromine atom allows for further cross-coupling reactions.
• Organic Ligand & Catalyst Development: Serves as a starting material for creating specialized ligands and organometallic catalysts used in asymmetric synthesis.
• Material Science Research: Employed in the development of advanced polymers and specialty chemicals with unique thermal or optical properties.
• Academic & Industrial R&D: A fundamental reagent in methodological organic chemistry research for studying cycloaddition reactions and ring-opening polymerizations.

Basic Information

Product Name	Cyclopentene, 1-Bromo-5-Methyl- (9Ci)
CAS No.	482344-18-3
Molecular Formula	C6H9Br
Molecular Weight	161.04 g/mol
Synonyms	1-Bromo-5-methylcyclopentene; 5-Methyl-1-bromocyclopentene; 1-Bromo-5-methyl-1-cyclopentene; Bromo(methyl)cyclopentene; (5-Methylcyclopent-1-en-1-yl)bromide
EINECS	Contact for details

Quality Control

Our Cyclopentene, 1-Bromo-5-Methyl- (9Ci) is produced and handled under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including GC, NMR, and HPLC analysis, to ensure identity, purity, and consistency. We provide a detailed Certificate of Analysis (COA) with every shipment, documenting all critical quality parameters. Our commitment to reliable supply and traceability supports your R&D and scale-up processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, well-ventilated place, away from heat sources and incompatible materials. Due to its highly volatile nature, ensure containers are kept tightly sealed when not in use. Recommended storage temperature is 2-8°C for long-term stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC)	≥ 95.0%
Water Content (KF)	≤ 0.5%

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