Description

Naphtho(2,3-B)Furan-4,9-Dione CAS NO 5656-82-6 is a high-purity, fused aromatic quinone derivative with a distinct furanone structure. This compound serves as a versatile and critical advanced organic intermediate for synthesizing complex molecules. It is primarily sought after by pharmaceutical research and specialty chemical manufacturers for developing novel active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of novel drug candidates, particularly those with fused polycyclic structures for oncology and antiviral applications.
• Organic Synthesis Reagent: Used in Diels-Alder reactions and other cycloadditions to construct complex, multi-ring systems in research and development.
• Dye and Pigment Precursor: Serves as a starting material for the development of specialized quinone-based dyes and high-performance pigments.
• Material Science Research: Investigated for use in organic electronic materials, such as n-type semiconductors or electron-accepting components in photovoltaic studies.
• Agrochemical Intermediate: Potential intermediate in the synthesis of advanced, high-efficacy active ingredients for crop protection.
• Academic & Industrial R&D: A valuable compound for methodological studies in synthetic organic chemistry and catalysis.

Basic Information

Item	Details
Product Name	Naphtho(2,3-B)Furan-4,9-Dione
CAS No.	5656-82-6
Molecular Formula	C₁₄H₆O₃
Molecular Weight	222.20 g/mol
Synonyms	Naphtho[2,3-b]furan-4,9-dione; 4,9-Dioxonaphtho[2,3-b]furan; Naphtho[2,3-b]furan-4,9-quinone; 2,3-Naphthofurandione; Benzo[g]isobenzofuran-4,9-dione; 4,9-Naphthofurandione; 5656-82-6 (CAS Registry)
EINECS	Contact for details

Quality Control

Our Naphtho(2,3-B)Furan-4,9-Dione is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including HPLC for purity and spectroscopic identification (IR, NMR), to ensure it meets exacting R&D and production standards. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at controlled room temperature (15-25°C). Keep away from strong oxidizing agents and strong bases. For long-term storage, consider an inert atmosphere to maintain optimal purity.

Specification

Item	Specification
Appearance	Yellow to orange crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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