Description

1,3-Dioxo-2,3-Dihydro-1H-Isoindole-5-Carboxylic Acid is a high-purity organic building block and key intermediate in advanced chemical synthesis. This compound is valued for its rigid isoindole-1,3-dione (phthalimide) core functionalized with a carboxylic acid group, enabling precise molecular construction. It is primarily sought by research institutions and manufacturers in the pharmaceutical and agrochemical sectors for developing active ingredients and functional materials. Consistent quality and reliable supply are critical for ensuring the success of downstream R&D and production processes.

Application

• Pharmaceutical Intermediate: A crucial building block for the synthesis of novel active pharmaceutical ingredients (APIs), particularly those containing the phthalimide pharmacophore.
• Agrochemical Synthesis: Used in the research and production of advanced herbicides, fungicides, and plant growth regulators.
• Organic Light-Emitting Diodes (OLEDs): Serves as a precursor for electron-transport materials or host materials in display and lighting technologies.
• Polymer Chemistry: Acts as a monomer or modifying agent for creating high-performance polyimides and other specialty polymers with enhanced thermal stability.
• Dye and Pigment Manufacturing: Employed in the synthesis of advanced organic pigments and dyes due to its stable, conjugated structure.
• Chemical Research & Development: A versatile reagent for constructing complex heterocyclic compounds in academic and industrial research settings.

Basic Information

Product Name	1,3-Dioxo-2,3-Dihydro-1H-Isoindole-5-Carboxylic Acid
CAS No.	20262-55-9
Molecular Formula	C9H5NO4
Molecular Weight	191.14 g/mol
Synonyms	5-Carboxyphthalimide; 5-Carboxy-1H-isoindole-1,3(2H)-dione; 1,3-Dihydro-1,3-dioxo-5-isobenzofurancarboxylic acid; 5-Carboxyisoindoline-1,3-dione; Phthalimide-5-carboxylic acid; Isoindole-1,3-dione-5-carboxylic acid; 20262-55-9
EINECS	Contact for details

Quality Control

Our 1,3-Dioxo-2,3-Dihydro-1H-Isoindole-5-Carboxylic Acid is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation via IR and NMR spectroscopy, to ensure it meets exacting specifications for research and industrial use. Certificates of Analysis (COA) documenting all critical parameters are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); keep the container tightly sealed to minimize exposure to atmospheric humidity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
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.