Description

5-Isobenzofurancarboxylicacid,1,3-Dihydro-1,3-Dioxo-,Radicalion(1-)(9Ci) is a specialized organic anion with a unique isobenzofuran backbone, serving as a critical intermediate in advanced chemical synthesis. Its value lies in its precise molecular architecture, which enables the construction of complex molecules for high-performance applications. This compound is essential for research and development chemists in the pharmaceutical, agrochemical, and advanced materials sectors seeking to develop novel active ingredients and functional polymers.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of novel active pharmaceutical ingredients (APIs), particularly for complex heterocyclic compounds.
• Agrochemical Research: Used in the development of new-generation herbicides, fungicides, and plant growth regulators requiring specific isobenzofuran motifs.
• Polymer & Material Science: Serves as a functional monomer or cross-linking agent for creating specialty polymers with tailored thermal or optical properties.
• Organic Synthesis Reagent: Employed in academic and industrial R&D labs for constructing complex molecular frameworks in multi-step synthetic routes.
• Ligand & Catalyst Development: Acts as a precursor for designing novel ligands used in catalytic systems for asymmetric synthesis.

Basic Information

Product Name	5-Isobenzofurancarboxylicacid,1,3-Dihydro-1,3-Dioxo-,Radicalion(1-)(9Ci)
CAS No.	145253-53-8
Molecular Formula	C9H3O4⁻
Molecular Weight	175.12 g/mol
Synonyms	1,3-Dioxo-1,3-dihydroisobenzofuran-5-carboxylate; 5-Carboxyphthalide Anion; Phthalide-5-carboxylic Acid Anion; Isobenzofuran-5-carboxylic Acid, 1,3-Dihydro-1,3-dioxo-, Radical Ion(1-); 1,3-Dihydro-1,3-dioxoisobenzofuran-5-carboxylate; 145253-53-8; 5-Carboxy-1,3-dihydroisobenzofuran-1,3-dione Anion
EINECS	Contact for details

Quality Control

Our production of 5-Isobenzofurancarboxylicacid,1,3-Dihydro-1,3-Dioxo-,Radicalion(1-)(9Ci) adheres to stringent quality management protocols. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation via spectroscopic methods, to ensure it meets exacting research and process standards. A Certificate of Analysis (COA) detailing all specifications is provided with every shipment to guarantee traceability and consistency for your critical applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). Due to its nature as an easily oxidized compound (store under inert atmosphere), it is recommended to handle and store under an inert atmosphere such as nitrogen or argon for long-term stability. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Off-white to light yellow powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Water Content (KF)	≤ 2.0%
Residue on Ignition	≤ 0.5%

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