Description

2-Bromo-5-Chloro-Benzo[B]Thiophene is a high-purity halogenated heterocyclic building block of significant importance in advanced organic synthesis. Its core value lies in its versatile reactivity, enabling the construction of complex molecular architectures for research and development. This compound is primarily needed by pharmaceutical, agrochemical, and material science industries for applications in drug discovery, crop protection, and the development of functional organic materials.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of novel active pharmaceutical ingredients (APIs), particularly for therapeutic agents targeting central nervous system disorders and oncology.
• Agrochemical Research: Serves as a critical scaffold for developing new-generation herbicides, fungicides, and insecticides with improved efficacy and environmental profiles.
• Material Science: Used in the research and development of organic semiconductors, liquid crystals, and other advanced electronic materials due to its electron-rich thiophene core.
• Chemical Synthesis: Functions as a versatile building block for Suzuki, Stille, and other cross-coupling reactions to create complex, functionalized organic molecules.
• Dye & Pigment Industry: Employed in the synthesis of specialized dyes and pigments where the benzo[b]thiophene structure imparts specific color and stability properties.

Basic Information

Product Name	2-Bromo-5-Chloro-Benzo[B]Thiophene
CAS No.	227802-38-2
Molecular Formula	C8H4BrClS
Molecular Weight	247.54 g/mol
Synonyms	2-Bromo-5-chlorobenzo[b]thiophene; 5-Chloro-2-bromobenzo[b]thiophene; Benzo[b]thiophene, 2-bromo-5-chloro-; 2-Bromo-5-chloro-1-benzothiophene; 227802-38-2; 2-Br-5-Cl-BT
EINECS	Contact for details

Quality Control

Our 2-Bromo-5-Chloro-Benzo[B]Thiophene is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, GC, and NMR, to ensure high purity and consistency. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment to support your R&D and quality assurance processes.

Storage

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

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
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.