Description

3-Oxo-1,3-Dihydroisobenzofuran-1-Ylphosphonic Acid is a specialized organophosphorus compound featuring a fused isobenzofuranone core. This structure makes it a valuable high-purity synthetic intermediate and building block for advanced chemical synthesis. It is primarily utilized by pharmaceutical R&D and fine chemical manufacturers for developing novel active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of complex drug molecules and active pharmaceutical ingredients (APIs).
• Agrochemical Research: Building block for developing new herbicides, fungicides, and plant growth regulators.
• Ligand and Catalyst Synthesis: Used to create novel phosphonate-based ligands for metal catalysis and coordination chemistry.
• Material Science: Intermediate for synthesizing specialty polymers and advanced organic materials with specific functional properties.
• Chemical Biology Probes: Serves as a core structure for designing enzyme inhibitors and molecular probes in biochemical research.

Basic Information

Product Name	3-Oxo-1,3-Dihydroisobenzofuran-1-Ylphosphonic Acid
CAS No.	61260-15-9
Molecular Formula	C8H7O5P
Molecular Weight	214.11 g/mol
Synonyms	1,3-Dihydro-3-oxo-1-isobenzofuranylphosphonic Acid; 1-(Phosphono)phthalide; Phthalidylphosphonic Acid; 3-Oxo-1-phthalanylphosphonic Acid; 1-Phosphonophthalide; Isobenzofuran-1(3H)-one, 1-(phosphono)-; 61260-15-9; 1,3-Dihydro-3-oxobenzofuran-1-ylphosphonic acid
EINECS	Contact for details

Quality Control

We supply high-purity grades suitable for demanding research and synthesis applications. Our products undergo rigorous quality testing to ensure compliance with industry standards. Certificates of Analysis (COA) are available upon request, detailing purity, identity, and impurity profiles.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to minimize exposure to atmospheric moisture. For long-term storage, consider using desiccants.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Water Content (KF)	≤ 2.0%
Residue on Ignition	≤ 0.1%

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