Description

8-Chloro-4H-Benzo[B]Thieno[2,3-D]Thiine-2-Carboxylic Acid is a high-purity, complex heterocyclic carboxylic acid derivative, serving as a critical advanced intermediate in modern organic synthesis. Its value lies in providing a sophisticated molecular scaffold for constructing novel compounds with targeted biological or material properties. This product is essential for research and development chemists in the pharmaceutical and agrochemical industries, particularly those focused on developing new active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: A key building block for the synthesis of novel drug candidates, particularly in therapeutic areas requiring complex fused heterocyclic systems.
• Agrochemical Research: Used in the development of new pesticides and herbicides, where the benzo[b]thieno[2,3-d]thiine core can contribute to unique modes of action.
• Material Science Precursor: Serves as a starting material for creating specialized organic semiconductors, ligands for catalysis, or monomers for advanced polymers.
• Chemical Biology Probe Synthesis: Employed to construct molecular tools for studying biological processes and target identification.
• Academic & Contract Research: A valuable reagent for universities and CROs (Contract Research Organizations) exploring new chemical spaces and reaction methodologies.

Basic Information

Product Name	8-Chloro-4H-Benzo[B]Thieno[2,3-D]Thiine-2-Carboxylic Acid
CAS No.	255395-56-3
Molecular Formula	C12H7ClO2S2
Molecular Weight	282.77 g/mol
Synonyms	8-Chloro-4H-benzo[4,5]thieno[2,3-d][1,3]thiin-2-carboxylic acid; 8-Chloro-4H-1,3-dithiino[4',5':4,5]benzo[1,2-b]thiophene-2-carboxylic acid; 255395-56-3; 8-Chloro-4H-benzo[b]thieno[2,3-d]thiine-2-carboxylic acid; Benzo[b]thieno[2,3-d][1,3]dithiin-2-carboxylic acid, 8-chloro-4H-; 8-Chloro-4H-1,3-dithiino[4',5':4,5]benzo[1,2-b]thiophene-2-carboxylic acid
EINECS	Contact for details

Quality Control

Our 8-Chloro-4H-Benzo[B]Thieno[2,3-D]Thiine-2-Carboxylic Acid is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation via spectroscopic methods, to ensure it meets the high standards required for research and process development. Certificates of Analysis (COA) with detailed specifications are provided for each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its sensitivity to strong acids and organic solvents, keep away from incompatible materials. The container must be kept tightly sealed to protect the contents from moisture.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference standard
Purity (HPLC)	≥ 97.0%
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.