Description

5-Phenoxy-1,3-Isobenzofurandione is a specialized organic compound belonging to the class of phthalic anhydride derivatives. This chemical serves as a versatile and high-value intermediate for synthesizing advanced materials and fine chemicals. It is particularly sought after by manufacturers in the pharmaceutical, agrochemical, and polymer industries for the development of novel active ingredients and performance additives.

Application

• Pharmaceutical Intermediate: Key building block for the synthesis of novel active pharmaceutical ingredients (APIs), particularly in the development of compounds with specific biological activity.
• Agrochemical Synthesis: Used in the production of advanced herbicides, fungicides, and insecticides, where its structural motif contributes to efficacy and selectivity.
• Polymer & Resin Modifier: Acts as a functional monomer or cross-linking agent to enhance the thermal stability, mechanical properties, and chemical resistance of specialty polymers and epoxy resins.
• Dye & Pigment Manufacturing: Serves as a precursor for the synthesis of high-performance organic pigments and colorants with improved lightfastness and durability.
• Liquid Crystal & OLED Materials: A valuable intermediate in the production of advanced electronic materials for displays and optoelectronic devices.
• Research & Development: Employed in academic and industrial R&D laboratories for exploring new chemical entities and reaction pathways in organic synthesis.

Basic Information

Product Name	5-Phenoxy-1,3-Isobenzofurandione
CAS No.	21345-01-7
Molecular Formula	C14H8O4
Molecular Weight	240.21 g/mol
Synonyms	5-Phenoxyisobenzofuran-1,3-dione; Phenoxyphthalic Anhydride; 1,3-Isobenzofurandione, 5-phenoxy-; 5-Phenoxyphthalic Anhydride; 5-Phenoxy-1,3-dihydroisobenzofuran-1,3-dione; 5-Phenoxy-1,3-dioxoisoindoline (tautomeric form); 5-Phenoxyphthalic acid cyclic anhydride
EINECS	Contact for details

Quality Control

Our 5-Phenoxy-1,3-Isobenzofurandione is produced under stringent quality management systems. Each batch undergoes comprehensive analytical testing to ensure high purity and consistency, meeting the rigorous standards required for advanced synthetic applications. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are provided with every shipment to guarantee traceability and quality assurance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent degradation from atmospheric moisture. Keep away from incompatible materials such as strong bases and amines.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Heavy Metals	≤ 20 ppm
Residue on Ignition	≤ 0.1%

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