Description

5-Bromobenzo[B]Thiophene-3-Carboxylic Acid is a high-purity, versatile heterocyclic building block essential for advanced organic synthesis. This compound is valued for its role as a key intermediate in the development of novel pharmaceuticals and functional materials. It is primarily sought after by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and material science industries for constructing complex molecular architectures.

Application

• Pharmaceutical Intermediate: A crucial precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for candidates targeting central nervous system (CNS) disorders and oncology.
• Agrochemical Research: Serves as a building block for developing new herbicides, fungicides, and insecticides with novel modes of action.
• Material Science: Used in the research and development of organic semiconductors, liquid crystals, and other electronic materials due to its fused thiophene core.
• Chemical Synthesis: Acts as a versatile scaffold for palladium-catalyzed cross-coupling reactions (e.g., Suzuki, Heck) to introduce further complexity.
• Dye & Pigment Industry: Employed as an intermediate for synthesizing specialized dyes and pigments with specific light-absorption properties.

Basic Information

Product Name	5-Bromobenzo[B]Thiophene-3-Carboxylic Acid
CAS No.	7312-24-5
Molecular Formula	C9H5BrO2S
Molecular Weight	257.10 g/mol
Synonyms	5-Bromobenzo[b]thiophene-3-carboxylic acid; 3-Carboxy-5-bromobenzo[b]thiophene; 5-Bromo-1-benzothiophene-3-carboxylic acid; 5-Bromobenzo[b]thien-3-carboxylic acid; 5-Bromobenzo[b]thiophene-3-carboxylate (acid form); 5-Bromo-benzo[b]thiophene-3-carboxylic acid; 5-Bromobenzo(b)thiophene-3-carboxylic Acid; 5-Bromo-3-thianaphthenecarboxylic Acid
EINECS	Contact for details

Quality Control

Our 5-Bromobenzo[B]Thiophene-3-Carboxylic Acid is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC, NMR, and mass spectrometry, to ensure identity, purity, and consistency. We provide a detailed Certificate of Analysis (COA) with every shipment, confirming compliance with customer specifications and industry standards.

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. The compound is light-sensitive and should be handled under appropriate conditions to maintain stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Conforms to reference
Assay (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.