Description

Benzothieno[2,3-B]Quinoxaline is a high-purity fused heterocyclic compound with the CAS number 243-69-6, serving as a critical advanced intermediate in organic synthesis. This specialized chemical is valued for its unique electronic and structural properties, which are essential for developing novel functional materials. It is primarily required by R&D laboratories and industrial manufacturers in the pharmaceutical, agrochemical, and organic electronics sectors for applications ranging from material science to active pharmaceutical ingredient (API) development.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of novel drug candidates and active pharmaceutical ingredients (APIs), particularly for compounds targeting specific biological pathways.
• Organic Electronic Materials: Serves as a core structure in the development of organic semiconductors, charge-transport materials, and emitters for OLED (Organic Light-Emitting Diode) devices.
• Agrochemical Research: Used in the research and development of new pesticides and herbicides, leveraging its heterocyclic framework for bioactivity.
• Dye and Pigment Synthesis: Acts as a precursor for creating specialized dyes, pigments, and fluorescent markers due to its extended conjugated system.
• Material Science Research: Employed in academic and industrial R&D for creating novel polymers, ligands for catalysis, and other advanced functional materials.
• Chemical Synthesis Reference Standard: Used as a pure analytical standard for method development and quality control in chemical analysis.

Basic Information

Product Name	Benzothieno[2,3-B]Quinoxaline
CAS No.	243-69-6
Molecular Formula	C14H8N2S
Molecular Weight	236.29 g/mol
Synonyms	Benzo[4,5]thieno[2,3-b]quinoxaline; Thieno[2',3':4,5]thieno[2,3-b]quinoxaline (common misnomer); BTQ; 2,3-Benzo-1,4-thiaza-anthracene; NSC 51105; Benzothienoquinoxaline; Quinoxaline, benzothieno-; 1,4-Diazabenzothiophenoquinoxaline
EINECS	Contact for details

Quality Control

Our Benzothieno[2,3-B]Quinoxaline is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and spectroscopic methods for structural confirmation, to ensure it meets the high standards required for research and industrial synthesis. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment and is available upon request.

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 incompatible materials. For long-term storage, consider storing under an inert atmosphere to maintain optimal purity.

Specification

Item	Specification
Appearance	Yellow to brown crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0% (Standard Grade)
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm

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