Description

5,11-Dihydro[1]Benzopyrano[4,3-C][1]Benzopyran-5,11-Dione is a high-purity organic compound belonging to the benzopyranone class, serving as a critical advanced intermediate for complex chemical synthesis. Its value lies in its rigid, fused heterocyclic structure, which is essential for constructing molecules with specific electronic and steric properties. This compound is primarily needed by research institutions and industrial R&D departments in the pharmaceutical, agrochemical, and material science sectors for developing novel active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of novel drug candidates, particularly those targeting central nervous system (CNS) disorders or possessing anti-inflammatory properties.
• Agrochemical Research: Used in the development of new-generation pesticides and herbicides, where its benzopyranone core can contribute to bioactive molecule design.
• Organic Electronic Materials: Serves as a precursor for creating π-conjugated systems and charge-transport materials used in OLEDs (Organic Light-Emitting Diodes) and other optoelectronic devices.
• Dye & Pigment Synthesis: Acts as an intermediate for producing specialized chromophores and fluorophores used in high-performance dyes and imaging agents.
• Academic & Contract Research: Employed in universities and CROs (Contract Research Organizations) for methodological studies in heterocyclic chemistry and catalysis.
• Polymer Modification: Can be incorporated as a functional monomer to impart specific thermal or optical properties to advanced polymer composites.

Basic Information

Product Name	5,11-Dihydro[1]Benzopyrano[4,3-C][1]Benzopyran-5,11-Dione
CAS No.	13225-81-5
Molecular Formula	C₁₅H₈O₃
Molecular Weight	236.22 g/mol
Synonyms	5,11-Dihydro[1]benzopyrano[4,3-c][1]benzopyran-5,11-dione; 5H,11H-[1]Benzopyrano[4,3-c][1]benzopyran-5,11-dione; Benzo[5,6]chromeno[3,4-c]chromene-6,12-dione; Dibenzo[b,d]furan-2,8-dicarboxylic acid, cyclic anhydride (derived); 2,8-Dicarboxydibenzofuran cyclic anhydride; 5,11-Dihydrodibenzo[b,e][1,4]dioxine-5,11-dione (alternative fused ring naming); Contact for details on additional trade names.
EINECS	Contact for details

Quality Control

Our 5,11-Dihydro[1]Benzopyrano[4,3-C][1]Benzopyran-5,11-Dione is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency, meeting the high standards required for research and development applications. Certificates of Analysis (COA) detailing purity (typically by HPLC), identification (IR, NMR), and impurity profiles are available upon request. We support custom synthesis and can tailor specifications to meet specific project requirements, including compliance with relevant ICH guidelines for pharmaceutical development.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). The compound may be light-sensitive (store away from light). Keep away from strong oxidizing agents and incompatible materials. For long-term storage, consider storing under an inert atmosphere to maintain optimal purity.

Specification

Item	Specification
Appearance	Yellow to light brown crystalline powder
Identification (IR)	Conforms to reference spectrum
Identification (HPLC)	Retention time matches reference standard
Purity (HPLC)	≥ 97.0% (Area %)
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.