Description

1,3-Dioxo-2,3-dihydro-1H-isoindole-4-carboxylic acid is a high-purity, versatile organic intermediate of significant importance in advanced chemical synthesis. Its core value lies in its functionalized isoindole-1,3-dione (phthalimide) structure, which serves as a critical building block for creating complex molecules with tailored properties. This compound is essential for research and production in the pharmaceutical, agrochemical, and specialty chemical industries, where it is used to develop active ingredients and functional materials. We supply this product with a commitment to consistent quality and reliable global supply.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly those containing the phthalimide pharmacophore.
• Agrochemical Synthesis: Used in the development of novel herbicides, fungicides, and plant growth regulators.
• Organic Light-Emitting Diodes (OLEDs): Serves as a building block for electron-transport materials and emissive layer components in display technologies.
• Polymer Chemistry: Employed in the creation of specialty polymers, including polyimides and other high-performance resins.
• Dye and Pigment Manufacturing: Acts as an intermediate for producing advanced colorants and functional dyes.
• Research & Development: A valuable reagent in academic and industrial R&D for exploring new chemical entities and reaction pathways.

Basic Information

Product Name	1,3-Dioxo-2,3-dihydro-1H-isoindole-4-carboxylic Acid
CAS No.	776-22-7
Molecular Formula	C9H5NO4
Molecular Weight	191.14 g/mol
Synonyms	4-Carboxyphthalimide; 4-Carboxy-1H-isoindole-1,3(2H)-dione; 1,3-Dioxoisoindoline-4-carboxylic acid; 4-Carboxyphthalic acid imide; Phthalimide-4-carboxylic acid; 1H-Isoindole-1,3(2H)-dione-4-carboxylic acid; 4-Carboxy-2,3-dihydro-1H-isoindole-1,3-dione
EINECS	212-284-7

Quality Control

Our 1,3-Dioxo-2,3-dihydro-1H-isoindole-4-carboxylic acid is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets exacting specifications for use in sensitive applications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with each shipment to guarantee traceability and compliance.

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). The product is moisture-sensitive; keep the container tightly sealed when not in use to prevent degradation.

Specification

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

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