Description

4,7-Methanoisobenzofuran-1,3-Dione, 4,7-Dihydro- CAS NO 17397-31-8 is a specialized bicyclic anhydride compound, also known as 3,6-Epoxy-1,2,3,6-tetrahydrophthalic anhydride, which serves as a key reactive intermediate in advanced organic synthesis. Its unique strained-ring structure makes it a valuable building block for creating polymers with tailored properties and for synthesizing complex pharmaceutical and agrochemical molecules. This high-purity chemical is essential for R&D chemists and production engineers in the pharmaceutical, advanced materials, and specialty chemical industries seeking to develop novel products with enhanced performance characteristics.

Application

• Polymer Chemistry: As a reactive monomer for the synthesis of epoxy resins, polyimides, and other high-performance polymers, imparting rigidity and thermal stability.
• Pharmaceutical Intermediates: A crucial building block in the multi-step synthesis of active pharmaceutical ingredients (APIs), particularly for complex, bridged-ring structures.
• Agrochemical Synthesis: Used in the production of advanced crop protection agents and herbicides, where its specific stereochemistry is leveraged.
• Crosslinking Agent: Functions as a crosslinker in coatings, adhesives, and composite materials to enhance mechanical strength and chemical resistance.
• Organic Synthesis Reagent: Employed in Diels-Alder reactions and other cycloadditions to construct complex polycyclic frameworks in academic and industrial research.
• Curing Agent for Epoxies: Acts as a hardener/anhydride curing agent for epoxy resin systems in electronic encapsulants and structural composites.

Basic Information

Product Name	4,7-Methanoisobenzofuran-1,3-Dione, 4,7-Dihydro-
CAS No.	17397-31-8
Molecular Formula	C9H8O3
Molecular Weight	164.16 g/mol
Synonyms	3,6-Epoxy-1,2,3,6-tetrahydrophthalic anhydride; 4,7-Dihydro-4,7-methanoisobenzofuran-1,3-dione; 3a,4,7,7a-Tetrahydro-4,7-methanoisobenzofuran-1,3-dione; Norbornene-2,3-dicarboxylic anhydride (endo-); endo-3,6-Epoxy-δ⁴-tetrahydrophthalic anhydride; endo-Bicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic anhydride; Nadic anhydride (endo-); Contact for additional synonyms.
EINECS	241-417-1

Quality Control

Our production of 4,7-Methanoisobenzofuran-1,3-Dione, 4,7-Dihydro- adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. The material undergoes rigorous analytical testing, including HPLC for assay and impurity profiling, to meet exacting customer specifications. Certificates of Analysis (COA) detailing identity, purity, and relevant physical parameters are provided with each shipment and are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (15-25°C). This compound is hygroscopic (moisture-sensitive); therefore, containers must be kept tightly sealed to prevent degradation from atmospheric moisture. Keep away from strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	164 - 168 °C
Loss on Drying	≤ 0.5%
Related Substances (HPLC)	Total impurities ≤ 2.0%

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