Description

4,7-Diphenyl-3A,4,7,7A-Tetrahydroisobenzofuran-1,3-Dione is a specialized organic compound belonging to the class of substituted isobenzofuran-1,3-diones. This chemical serves as a versatile and high-value synthetic intermediate in advanced organic synthesis. It is primarily sought after by pharmaceutical R&D and fine chemical manufacturers for constructing complex molecular architectures. Its unique bicyclic structure with phenyl substituents makes it a valuable precursor for developing novel active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of complex drug candidates and active pharmaceutical ingredients (APIs).
• Organic Synthesis Reagent: Used in Diels-Alder reactions and other cycloadditions to create novel polycyclic frameworks.
• Material Science Research: Precursor for developing specialty polymers, ligands, or organic electronic materials.
• Agrochemical Synthesis: Intermediate in the development of advanced crop protection agents and herbicides.
• Academic & Industrial R&D: Used in research laboratories for methodological studies and exploring new chemical transformations.

Basic Information

Product Name	4,7-Diphenyl-3A,4,7,7A-Tetrahydroisobenzofuran-1,3-Dione
CAS No.	20929-46-8
Molecular Formula	C20H16O3
Molecular Weight	304.34 g/mol
Synonyms	4,7-Diphenyl-4,7-dihydroisobenzofuran-1,3-dione; 4,7-Diphenyl-4,7-dihydro-2-benzofuran-1,3-dione; 4,7-Diphenyl-3a,4,7,7a-tetrahydro-1H-isoindole-1,3(2H)-dione; 4,7-Diphenylisobenzofuran-1,3-dione, 4,7-dihydro-; 4,7-Diphenyl-3a,4,7,7a-tetrahydroisoindole-1,3-dione; 20929-46-8; NSC 163022
EINECS	Contact for details

Quality Control

Our 4,7-Diphenyl-3A,4,7,7A-Tetrahydroisobenzofuran-1,3-Dione is produced under a strict quality management system. 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, documenting all critical quality parameters. Our commitment to reliable supply and traceability supports your R&D and production needs.

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); the container must be kept tightly sealed in a dry environment to prevent degradation.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Melting Point	Contact for details
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%

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