Description

1(3H)-Isobenzofuranone,3-Hydroxy-4-Methyl-(9Ci) is a specialized organic compound belonging to the isobenzofuranone class, serving as a key synthetic intermediate and building block in advanced chemical synthesis. Its value lies in its functionalized aromatic lactone structure, which provides a versatile scaffold for constructing complex molecules in research and industrial applications. This compound is primarily needed by fine chemical manufacturers, pharmaceutical R&D laboratories, and agrochemical companies engaged in developing novel active ingredients and performance materials.

Application

• Pharmaceutical Intermediate: Serves as a crucial precursor in the synthesis of novel active pharmaceutical ingredients (APIs), particularly for compounds with fused heterocyclic structures.
• Agrochemical Synthesis: Used as a building block in the research and development of new herbicides, fungicides, and plant growth regulators.
• Material Science Research: Acts as a monomer or functional modifier in the development of specialty polymers and advanced organic materials.
• Dye & Pigment Intermediate: Employed in the synthesis of complex organic colorants and high-performance pigments due to its aromatic backbone.
• Organic Synthesis Reagent: Provides a versatile lactone moiety for constructing complex natural product analogs and other fine chemicals in academic and industrial R&D.
• Ligand & Catalyst Development: Utilized as a starting material for creating novel chelating ligands and organocatalysts in asymmetric synthesis.

Basic Information

Product Name	1(3H)-Isobenzofuranone,3-Hydroxy-4-Methyl-(9Ci)
CAS No.	72288-75-6
Molecular Formula	C9H8O3
Molecular Weight	164.16 g/mol
Synonyms	3-Hydroxy-4-methyl-1(3H)-isobenzofuranone; 4-Methyl-3-hydroxyphthalide; 3-Hydroxy-4-methylphthalide; 4-Methyl-3-hydroxy-1(3H)-isobenzofuranone; 3-Hydroxy-4-methyl-1(3H)-isobenzofuranone (9CI); 4-Methyl-3-hydroxy-2-benzofuran-1(3H)-one
EINECS	Contact for details

Quality Control

Our 1(3H)-Isobenzofuranone,3-Hydroxy-4-Methyl-(9Ci) is produced under strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including HPLC for assay and related substances, to meet the stringent requirements of our global B2B clients in the fine chemical and pharmaceutical sectors. Certificates of Analysis (COA) detailing all specifications are provided with every shipment to support your quality assurance and regulatory compliance needs.

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). Keep away from incompatible materials such as strong bases and oxidizing agents. For long-term storage, consider an inert atmosphere to maintain product stability.

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%
Residue on Ignition	≤ 0.1%
Related Substances (HPLC)	Total impurities ≤ 2.0%

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