Description

Bis[1]Benzothieno[3,2-E:2',3'-G]Isobenzofuran-5,7-Dione is a high-purity, specialized organic heterocyclic compound characterized by its fused benzothieno-isobenzofuran-dione structure. This compound serves as a critical advanced intermediate or functional material in the synthesis of complex organic electronic materials and pharmaceuticals. It is primarily needed by R&D laboratories and industrial manufacturers in the organic semiconductor, photovoltaics, and fine chemical synthesis sectors, where precise molecular architecture is paramount for performance.

Application

• Organic Semiconductor Precursor: Key building block for the synthesis of n-type organic semiconductors and electron-transport materials (ETMs) used in OLEDs and OFETs.
• Photovoltaic Material Development: Serves as an electron-accepting core unit in the design of non-fullerene acceptors (NFAs) for next-generation organic solar cells.
• Pharmaceutical Intermediate: Utilized in the research and development of novel active pharmaceutical ingredients (APIs) with complex fused-ring systems.
• Dye and Pigment Synthesis: Intermediate for creating high-performance pigments and dyes with specific optical and stability properties.
• Ligand and Catalyst Framework: Used to construct sophisticated chelating ligands for catalysis and materials science applications.
• Research & Development: A valuable reference standard and starting material in academic and industrial organic chemistry research.

Basic Information

Product Name	Bis[1]Benzothieno[3,2-E:2',3'-G]Isobenzofuran-5,7-Dione
CAS No.	65689-55-6
Molecular Formula	C22H8O4S2
Molecular Weight	408.42 g/mol
Synonyms	Bis(benzothieno)isobenzofuran-5,7-dione; 5,7-Dioxobis[1]benzothieno[3,2-e:2',3'-g]isobenzofuran; Dithienonaphthobisdicarboximide; Naphtho[1,2-c:5,6-c']bis[1,2,5]thiadiazole-4,9-dione derivative; BBTID; BBL Intermediate; Thienoisoindigo derivative; Organic electronic material 65689-55-6
EINECS	Contact for details

Quality Control

Our Bis[1]Benzothieno[3,2-E:2',3'-G]Isobenzofuran-5,7-Dione is manufactured under strict quality management protocols. Each batch undergoes rigorous analytical testing, including HPLC for purity, NMR, and MS for structural confirmation, to ensure consistency and meet the stringent requirements of advanced material synthesis. Certificates of Analysis (COA) with detailed chromatographic data are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). The compound may be light-sensitive; prolonged exposure to light should be avoided. Keep container tightly sealed in a dry environment to minimize moisture uptake.

Specification

Item	Specification
Appearance	Yellow to orange crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0% (Area %)
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Single Impurity (HPLC)	≤ 1.0%

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