Description

3(2H)-Benzofuranone,2,2,4,5,7-Pentamethyl-(9Ci) is a high-purity, multi-methylated benzofuranone derivative that serves as a valuable synthetic intermediate and building block in advanced organic chemistry. Its unique, sterically hindered structure makes it a critical precursor for developing specialized fine chemicals, including advanced materials, functional additives, and active pharmaceutical ingredients (APIs). This compound is essential for R&D and production teams in the pharmaceutical, agrochemical, and specialty chemical sectors seeking to create novel molecules with tailored properties.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of novel drug candidates and active pharmaceutical ingredients (APIs), particularly for compounds requiring a sterically hindered benzofuranone core.
• Agrochemical Synthesis: Used in the research and development of new pesticides, herbicides, and plant growth regulators where its substituted structure imparts specific biological activity.
• Functional Material Precursor: Serves as a monomer or intermediate in the production of advanced polymers, liquid crystals, and organic electronic materials.
• Fine Chemical Manufacturing: Employed in the synthesis of complex fragrance and flavor compounds, dyes, and photostabilizers.
• Research & Development: A valuable tool for academic and industrial chemists exploring new organic reactions, catalysis, and structure-activity relationships (SAR).
• Specialty Additive Synthesis: Intermediate for creating antioxidants, UV absorbers, and other performance additives for plastics and coatings.

Basic Information

Product Name	3(2H)-Benzofuranone,2,2,4,5,7-Pentamethyl-(9Ci)
CAS No.	820257-73-6
Molecular Formula	C13H16O2
Molecular Weight	204.27 g/mol
Synonyms	2,2,4,5,7-Pentamethyl-3(2H)-benzofuranone; 2,2,4,5,7-Pentamethyl-2,3-dihydrobenzofuran-3-one; 2,2,4,5,7-Pentamethyl-2H-1-benzofuran-3-one; 2,2,4,5,7-Pentamethyl-3-benzofuranone; 2,2,4,5,7-Pentamethyl-3-oxo-2,3-dihydrobenzofuran; 2,2,4,5,7-Pentamethyl-2,3-dihydro-1-benzofuran-3-one; 2,2,4,5,7-Pentamethyl-2,3-dihydrobenzofuran-3(2H)-one; 2,2,4,5,7-Pentamethyl-3(2H)-benzofuranone (9CI)
EINECS	Contact for details

Quality Control

Our 3(2H)-Benzofuranone,2,2,4,5,7-Pentamethyl-(9Ci) is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing to ensure high purity, consistency, and identity, meeting the stringent requirements of our global B2B clients. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with each 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 controlled room temperature (15-25°C). Keep away from heat, sparks, and open flame. For long-term storage, consider an inert atmosphere to maintain optimal 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%
Heavy Metals	≤ 20 ppm
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 1.5%

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