Description

[2]Benzopyrano[6,5,4-Def][2]Benzopyran-1,3,6,8-Tetrone, 4,9-Dichloro- is a high-purity, halogenated polycyclic aromatic compound with a defined quinone-like structure. This specialty chemical is valued for its role as a key synthetic intermediate and functional material precursor in advanced manufacturing. It is primarily sought by R&D laboratories and industrial producers in the pharmaceutical, agrochemical, and organic electronics sectors for developing novel compounds and materials.

Application

• Pharmaceutical Intermediate: Serves as a critical building block in the synthesis of complex drug molecules and active pharmaceutical ingredients (APIs).
• Agrochemical Synthesis: Used in the research and production of advanced herbicides, pesticides, and plant growth regulators.
• Organic Electronic Materials: Acts as a precursor for n-type semiconductors, electron-transport materials, and other components in OLEDs and organic photovoltaics.
• Dye and Pigment Manufacturing: Employed in the synthesis of high-performance, chlorine-containing pigments and dyes for specialized applications.
• Polymer Chemistry: Functions as a monomer or cross-linking agent in the development of specialty polymers with enhanced thermal or electronic properties.
• Research & Development: A valuable reagent in academic and industrial R&D for exploring new chemical reactions and material properties.

Basic Information

Item	Details
Product Name	[2]Benzopyrano[6,5,4-Def][2]Benzopyran-1,3,6,8-Tetrone, 4,9-Dichloro-
CAS No.	59723-21-6
Molecular Formula	C₁₄H₄Cl₂O₆
Molecular Weight	339.09 g/mol
Synonyms	4,9-Dichloroperylene-3,4,9,10-tetracarboxylic dianhydride; 4,9-Dichloroperylene-3,4:9,10-tetracarboxylic bisanhydride; 4,9-Dichloro-PTCDA; 4,9-Dichloroperylene tetracarboxylic dianhydride; 4,9-Dichloro-3,4,9,10-perylenetetracarboxylic dianhydride; 4,9-Dichloroperylene-3,4,9,10-tetracarboxylic acid dianhydride; 4,9-Dichloro-PTCDA
EINECS	Contact for details

Quality Control

Our [2]Benzopyrano[6,5,4-Def][2]Benzopyran-1,3,6,8-Tetrone, 4,9-Dichloro- is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including HPLC, NMR, and elemental analysis, to ensure high purity and batch-to-batch consistency. Certificates of Analysis (COA) detailing all specifications are provided with each shipment.

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 such as strong bases and reducing agents. Due to its light-sensitive nature, containers should be kept in opaque packaging or amber glass.

Specification

Item	Specification
Appearance	Orange to red-brown powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Melting Point	> 300 °C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm

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