Description

3-Bromo-8,9-Dihydro-5H-Benzo[7]Annulen-6(7H)-One is a specialized brominated benzannulene derivative that serves as a high-value synthetic intermediate. This compound matters for its unique fused-ring structure, which provides a versatile scaffold for constructing complex molecules in advanced research and development. It is primarily needed by pharmaceutical and agrochemical R&D teams for applications in medicinal chemistry, including the synthesis of novel active pharmaceutical ingredients (APIs) and crop protection agents.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of novel drug candidates, particularly for central nervous system (CNS) and anti-inflammatory targets.
• Agrochemical Research: Used in the development of new herbicides, fungicides, and insecticides due to its bioactive core structure.
• Material Science Precursor: Serves as a monomer or precursor for advanced organic electronic materials and specialty polymers.
• Academic & Industrial R&D: A valuable reagent for methodological studies in organic synthesis, including cross-coupling and ring-forming reactions.
• Chemical Reference Standard: Utilized as an analytical standard for quality control and method validation in chemical production.

Basic Information

Product Name	3-Bromo-8,9-Dihydro-5H-Benzo[7]Annulen-6(7H)-One
CAS No.	152356-67-7
Molecular Formula	C11H9BrO
Molecular Weight	237.10 g/mol
Synonyms	3-Bromobenzo[7]annulen-6(7H)-one; 3-Bromo-6,7,8,9-tetrahydro-5H-benzo[7]annulen-6-one; 3-Bromo-5,6,7,8,9,10-hexahydrobenzocyclohepten-6-one; 3-Bromocyclohepta[b]benzofuran-6(7H)-one precursor; Benzo[7]annulen-6-one, 3-bromo-8,9-dihydro-5H-; 152356-67-7 (CAS); 3-Br-DH-BAO
EINECS	Contact for details

Quality Control

Our 3-Bromo-8,9-Dihydro-5H-Benzo[7]Annulen-6(7H)-One is produced under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, GC, NMR, and mass spectrometry, to ensure high purity and batch-to-batch consistency. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available upon request to support your quality assurance and regulatory documentation needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Keep away from heat, sparks, and open flame. Due to its light-sensitive nature, handling should be minimized under direct light exposure.

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.