Description

2-(2-Hydroxy-5-Methoxy-3-tert-Butyl-Phenyl)-4,4-Dimethoxy-6-tert-Butyl-Cyclohexa-2,5-Dien-1-One is a specialized phenolic compound with a complex molecular structure designed for high-performance applications. This chemical matters as a versatile intermediate and functional additive, offering unique properties derived from its sterically hindered phenol and quinone methide precursor structure. It is primarily needed by manufacturers in the polymer, specialty chemical, and advanced material sectors seeking antioxidants, UV stabilizers, or key synthetic building blocks.

Application

• Polymer Additive: Acts as a high-performance antioxidant and processing stabilizer for plastics, synthetic rubbers, and elastomers to prevent thermal and oxidative degradation.
• UV Stabilizer Intermediate: Serves as a key precursor in the synthesis of advanced light stabilizers for coatings, automotive parts, and outdoor polymer applications.
• Specialty Chemical Synthesis: Used as a critical building block in organic synthesis for pharmaceuticals, agrochemicals, and fine chemicals due to its reactive phenolic and quinoid functionalities.
• Lubricant and Fuel Additive: Employed as an antioxidant additive in industrial lubricants, greases, and fuels to enhance stability and extend service life.
• Adhesive and Sealant Formulation: Incorporated into high-performance adhesives and sealants to improve their resistance to heat and environmental aging.

Basic Information

Product Name	2-(2-Hydroxy-5-Methoxy-3-tert-Butyl-Phenyl)-4,4-Dimethoxy-6-tert-Butyl-Cyclohexa-2,5-Dien-1-One
CAS No.	69217-03-4
Molecular Formula	C23H32O5
Molecular Weight	388.50 g/mol
Synonyms	2-(2-Hydroxy-5-methoxy-3-tert-butylphenyl)-4,4-dimethoxy-6-tert-butyl-2,5-cyclohexadien-1-one; 2,5-Cyclohexadien-1-one, 2-(2-hydroxy-5-methoxy-3-(1,1-dimethylethyl)phenyl)-4,4-dimethoxy-6-(1,1-dimethylethyl)-; Phenolic antioxidant intermediate; Hindered phenol derivative; Quinone methide precursor; Antioxidant 69217-03-4; Light stabilizer intermediate CAS 69217-03-4
EINECS	Contact for details

Quality Control

Our 2-(2-Hydroxy-5-Methoxy-3-tert-Butyl-Phenyl)-4,4-Dimethoxy-6-tert-Butyl-Cyclohexa-2,5-Dien-1-One is produced under a strict quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise specifications for use in sensitive applications like polymer stabilization. Certificates of Analysis (COA) documenting all critical parameters are available upon request 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). This product is light-sensitive (store away from light) and easily oxidized (store under inert atmosphere); it is recommended to keep the container under an inert gas blanket (e.g., nitrogen or argon) after opening and to minimize headspace. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Off-white to light yellow crystalline powder
Identification (IR)	Conforms to reference spectrum
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.