Description

5-Phenylisobenzofuran-1,3-Dione is a high-purity organic compound, widely recognized as a versatile chemical intermediate in advanced synthesis. Its unique fused-ring structure makes it a valuable building block for creating complex molecules with specific functional properties. This product is essential for research and development laboratories, as well as industrial-scale production in the pharmaceutical, agrochemical, and specialty polymer sectors.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for compounds with fused heterocyclic structures.
• Agrochemical Synthesis: Used in the development of advanced herbicides, fungicides, and plant growth regulators.
• Polymer Chemistry: Serves as a monomer or cross-linking agent for producing high-performance polymers, resins, and coatings with enhanced thermal stability.
• Organic Light-Emitting Diodes (OLEDs): Acts as a core component in the synthesis of electron-transport materials and emissive layer dopants.
• Dye and Pigment Manufacturing: Utilized as a starting material for creating novel organic pigments and colorants.
• Academic & Industrial Research: A critical reagent for methodological development in organic synthesis and materials science.

Basic Information

Product Name	5-Phenylisobenzofuran-1,3-Dione
CAS No.	955-16-8
Molecular Formula	C₁₄H₈O₃
Molecular Weight	224.21 g/mol
Synonyms	5-Phenylphthalide-1,3-dione; 5-Phenylphthalic Anhydride; 1,3-Dioxo-5-phenyl-1,3-dihydroisobenzofuran; 5-Phenyl-1,3-isobenzofurandione; 5-Phenylphthalic acid anhydride; 5-Phenyl-1,3-dihydroisobenzofuran-1,3-dione
EINECS	Contact for details

Quality Control

Our 5-Phenylisobenzofuran-1,3-Dione is manufactured under strict quality management systems. Every batch undergoes comprehensive analytical testing, including HPLC, NMR, and IR spectroscopy, to ensure identity, purity, and consistency. We provide a detailed Certificate of Analysis (COA) with each shipment, confirming compliance with agreed specifications. Our quality commitment supports applications requiring high-purity intermediates, from research to cGMP manufacturing.

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). This product is hygroscopic (moisture-sensitive); ensure containers are kept sealed to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Purity (HPLC)	≥ 98.0%
Melting Point	158 - 162 °C
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.