Description

4-Bromocyclopent-2-En-1-One is a versatile brominated cyclic enone, a key building block in advanced organic synthesis. Its reactive α,β-unsaturated carbonyl system and bromine substituent make it a valuable electrophile and coupling partner for constructing complex molecular architectures. This high-purity intermediate is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries developing novel active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: A critical precursor in the synthesis of complex drug molecules, particularly those containing functionalized cyclopentane or cyclopentene rings, such as prostaglandin analogs and other bioactive compounds.
• Agrochemical Synthesis: Used in the research and production of novel herbicides, fungicides, and plant growth regulators, leveraging its reactive sites for structural diversification.
• Material Science Research: Serves as a monomer or cross-linking agent in the development of specialty polymers and advanced organic materials with tailored properties.
• Chemical Biology & Probe Development: Employed as a scaffold for creating molecular probes and enzyme inhibitors due to its ability to undergo selective functionalization.
• Academic & R&D Laboratories: A fundamental reagent for methodological studies in organic chemistry, including cycloaddition reactions, palladium-catalyzed cross-couplings, and nucleophilic substitution explorations.
• Fine Chemical Production: Integral to the multi-step synthesis of flavors, fragrances, and other high-value specialty chemicals requiring precise stereochemical control.

Basic Information

Product Name	4-Bromocyclopent-2-En-1-One
CAS No.	765-56-0
Molecular Formula	C5H5BrO
Molecular Weight	161.00 g/mol
Synonyms	4-Bromocyclopent-2-enone; 4-Bromo-2-cyclopenten-1-one; 2-Cyclopenten-1-one, 4-bromo-; 4-Bromo-2-cyclopentenone; 4-Bromocyclopent-2-en-1-one; 4-Bromo-1-cyclopent-2-enone
EINECS	Contact for details

Quality Control

Our 4-Bromocyclopent-2-En-1-One is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, GC, and NMR, to ensure high chemical purity and identity confirmation. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing all relevant specifications. Our quality commitment ensures the consistency and reliability required for critical R&D and scale-up processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at controlled room temperature (15-25°C). Keep away from heat, sparks, and open flame. The compound is moisture-sensitive; keep the container tightly sealed under an inert atmosphere for long-term storage.

Specification

Item	Specification
Appearance	White to off-white crystalline solid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Melting Point	Contact for details
Water Content (KF)	≤ 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.