Description

4(Or 5)-(Hydroxymethyl)-6,7-Dimethoxy-1(3H)-Isobenzofuranone CAS NO 55570-89-3 is a high-purity, functionalized isobenzofuranone derivative, a key building block in advanced organic synthesis. Its value lies in its versatile hydroxymethyl and dimethoxy-substituted aromatic lactone structure, which is crucial for constructing complex molecular frameworks. This compound is essential for research and development chemists in the pharmaceutical, agrochemical, and fine chemical industries seeking to develop new active ingredients and specialty materials.

Application

• Pharmaceutical Intermediate: Serves as a critical precursor in the synthesis of novel drug candidates, particularly those targeting central nervous system (CNS) disorders or possessing complex heterocyclic structures.
• Agrochemical Synthesis: Used as a building block for developing new-generation herbicides, fungicides, or plant growth regulators with enhanced efficacy.
• Fine Chemical Production: Employed in the manufacture of specialty chemicals, dyes, pigments, and advanced polymer modifiers.
• Academic & Industrial R&D: A valuable reagent for methodological studies in organic chemistry, including catalysis, cross-coupling, and cyclization reactions.
• Material Science Research: Potential monomer or additive for creating specialized polymers with unique thermal or optical properties.

Basic Information

Product Name	4(Or 5)-(Hydroxymethyl)-6,7-Dimethoxy-1(3H)-Isobenzofuranone
CAS No.	55570-89-3
Molecular Formula	C11H12O5
Molecular Weight	224.21 g/mol
Synonyms	6,7-Dimethoxy-4(5)-(hydroxymethyl)-1(3H)-isobenzofuranone; 4(5)-(Hydroxymethyl)-6,7-dimethoxyphthalide; 6,7-Dimethoxy-4-hydroxymethylphthalide; 4-Hydroxymethyl-6,7-dimethoxyphthalide; 5-Hydroxymethyl-6,7-dimethoxyphthalide; 6,7-Dimethoxy-4-(hydroxymethyl)-2-benzofuran-1(3H)-one; 55570-89-3
EINECS	Contact for details

Quality Control

Our 4(Or 5)-(Hydroxymethyl)-6,7-Dimethoxy-1(3H)-Isobenzofuranone is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including HPLC, NMR, and IR spectroscopy, to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing all specifications are provided and 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 a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed after opening to prevent moisture absorption, which may affect stability and handling properties.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Related Substances (HPLC)	Total impurities ≤ 2.0%
Single Unknown Impurity	≤ 0.5%

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