Description

Benzdindeno1,2-Bpyran-5,11-Dione CAS NO 5651-60-5 is a specialized organic compound belonging to the class of polycyclic quinones. This high-purity chemical intermediate is valued for its unique fused-ring structure, which imparts specific electronic and photophysical properties. It is primarily utilized in advanced research and development within the pharmaceutical and materials science sectors, serving as a critical building block for novel active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Serves as a key precursor in the synthesis of novel drug candidates, particularly those targeting complex biological pathways.
• Organic Electronic Materials: Used in research for developing organic semiconductors, photoconductors, and components for OLED (Organic Light-Emitting Diode) devices.
• Dye & Pigment Research: Acts as a core structure for synthesizing new classes of high-performance dyes and pigments due to its quinone moiety.
• Photoinitiator Chemistry: Investigated for applications in photo-curable polymers and coatings as a potential photoactive component.
• Academic & Industrial R&D: Employed in chemical research to study structure-activity relationships and develop new synthetic methodologies.

Basic Information

Item	Detail
Product Name	Benzdindeno1,2-Bpyran-5,11-Dione
CAS No.	5651-60-5
Molecular Formula	C19H10O2
Molecular Weight	270.28 g/mol
Synonyms	Benz[d]indeno[1,2-b]pyran-5,11-dione; Benzo[5,6]indeno[2,1-c]chromene-5,11-dione; 5,11-Dioxobenz[d]indeno[1,2-b]pyran; 5H-Benzo[5,6]indeno[2,1-c]chromene-5,11-dione; 1,2-Benzenedicarboxylic acid, cyclic (2-hydroxy-1-naphthylmethylene) ester; (Contact for additional trade names)
EINECS	Contact for details

Quality Control

Our Benzdindeno1,2-Bpyran-5,11-Dione is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. We provide a detailed Certificate of Analysis (COA) with key parameters including assay (HPLC), related substances, and physical characterization. Specifications can be aligned with research-grade or custom purity requirements 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. The product is light-sensitive and should be handled under appropriate conditions to maintain stability.

Specification

Item	Specification
Appearance	Yellow to orange crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Related Substances (HPLC)	Total impurities ≤ 3.0%
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.