Description

2-((3,5-Di-tert-Butyl-4-Hydroxyphenyl)-Methylene)-4-Cyclopentene-1,3-Dione is a specialized organic compound belonging to the hindered phenol family, valued for its role as a high-performance intermediate in advanced material synthesis. Its molecular structure makes it a critical building block for creating antioxidants and light stabilizers, which are essential for enhancing the durability and longevity of polymers and coatings. This product is primarily targeted at R&D chemists and formulators in the polymer additives, specialty chemicals, and advanced material manufacturing sectors seeking to develop next-generation stabilization systems.

Application

• Polymer Additives: Serves as a key precursor in the synthesis of high-molecular-weight hindered phenol antioxidants for plastics (e.g., polyolefins, PVC) and synthetic rubbers.
• Advanced Stabilizer Systems: Used in the development of multifunctional stabilizers that combine antioxidant and light-stabilizing properties for demanding applications.
• Specialty Chemical Intermediates: Acts as a versatile building block for creating novel compounds used in lubricant additives, fuel stabilizers, and industrial fluid formulations.
• Coatings and Resins: Incorporated into the synthesis of additives that protect industrial coatings, paints, and adhesives from thermal and oxidative degradation.
• Material Science R&D: Employed in research laboratories for developing new organic frameworks and functional materials with enhanced stability profiles.
• Pharmaceutical Intermediates: Potential use as a synthetic intermediate in the research phase for developing pharmacologically active molecules, subject to appropriate purity grades.

Basic Information

Product Name	2-((3,5-Di-tert-Butyl-4-Hydroxyphenyl)-Methylene)-4-Cyclopentene-1,3-Dione
CAS No.	157397-06-3
Molecular Formula	C20H26O3
Molecular Weight	314.42 g/mol
Synonyms	4-Cyclopentene-1,3-dione, 2-[(3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl)methylene]-; 2-((3,5-Di-tert-butyl-4-hydroxyphenyl)methylene)cyclopent-4-ene-1,3-dione; 2-(3,5-Di-tert-butyl-4-hydroxybenzylidene)-1,3-cyclopentanedione; 2-(3,5-Di-tert-butyl-4-hydroxybenzylidene)cyclopentane-1,3-dione; 2-(3,5-Di-tert-butyl-4-hydroxybenzylidene)-4-cyclopentene-1,3-dione; Phenolic cyclopentenedione derivative; Hindered phenol cyclopentenedione
EINECS	Contact for details

Quality Control

Our 2-((3,5-Di-tert-Butyl-4-Hydroxyphenyl)-Methylene)-4-Cyclopentene-1,3-Dione is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including HPLC, GC, and NMR, to ensure high purity and consistent performance. Certificates of Analysis (COA) detailing identity, purity, and impurity profiles are provided with each shipment. We support compliance with relevant industry standards and can tailor specifications to meet specific R&D or production requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at a controlled room temperature (15-25°C). Due to its light-sensitive and easily oxidized nature, it is recommended to store the material under an inert atmosphere (e.g., nitrogen or argon) for long-term preservation and to minimize degradation. Keep away from heat, sparks, and open flames.

Specification

Item	Specification
Appearance	Yellow to orange crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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