Description

4-Bromo-3,4-Dihydro-2H-Benzo[B]Oxepin-5-One is a high-purity, versatile brominated heterocyclic building block of significant interest in advanced organic synthesis. Its unique oxepin-fused benzoyl structure makes it a valuable precursor for constructing complex molecular architectures, particularly in pharmaceutical research and development. This compound is primarily sought after 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

• Pharmaceutical Intermediate: A key synthon for the development of novel drug candidates, particularly in central nervous system (CNS) and anti-inflammatory therapeutic areas.
• Agrochemical Research: Used as a building block in the synthesis of new herbicides, fungicides, and plant growth regulators.
• Material Science: Serves as a precursor for functional organic materials, including liquid crystals and organic semiconductors.
• Chemical Biology: Employed in the synthesis of molecular probes and tool compounds for studying biological pathways.
• Academic & Contract Research: Essential for methodological development and exploratory chemistry in university and CRO laboratories.
• Custom Synthesis: A starting point for contract manufacturing organizations (CMOs) producing bespoke fine chemicals for client projects.

Basic Information

Product Name	4-Bromo-3,4-Dihydro-2H-Benzo[B]Oxepin-5-One
CAS No.	20426-78-2
Molecular Formula	C10H9BrO2
Molecular Weight	241.08 g/mol
Synonyms	4-Bromo-3,4-dihydro-2H-1-benzoxepin-5-one; 4-Bromo-5-oxo-3,4-dihydro-2H-benzo[b]oxepine; 2H-Benzoxepin-5-one, 4-bromo-3,4-dihydro-; 4-Bromodihydrobenzoxepin-5-one; Benzo[b]oxepin-5(2H)-one, 4-bromo-3,4-dihydro-; 4-Bromo-3,4-dihydro-2H-1-benzoxepin-5(5H)-one
EINECS	Contact for details

Quality Control

Our 4-Bromo-3,4-Dihydro-2H-Benzo[B]Oxepin-5-One is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, NMR, and GC-MS, to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) with every shipment, detailing all critical specifications. Our commitment to quality assurance ensures the material meets the high standards required for research and scale-up applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from heat, sparks, and open flame. For long-term storage, consider storing under an inert atmosphere to maintain optimal stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm

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