Description

1,2,4,4-Tetramethylcyclopentene is a specialized, high-purity cyclic olefin with a unique sterically hindered structure. This compound matters as a versatile and valuable chemical intermediate, particularly in the synthesis of complex organic molecules, fragrances, and advanced materials. It is needed by R&D chemists and process engineers in the pharmaceutical, agrochemical, and specialty chemical industries for applications requiring precise molecular architecture.

Application

• Pharmaceutical Intermediate: Serves as a key building block in the synthesis of active pharmaceutical ingredients (APIs) and other complex organic molecules.
• Agrochemical Synthesis: Used in the production of advanced pesticides, herbicides, and plant growth regulators.
• Fragrance and Flavor Industry: Acts as a precursor for musky or woody aroma chemicals due to its tetramethyl-substituted cyclopentene backbone.
• Specialty Polymer Monomer: Investigated for use in creating polymers with specific thermal or mechanical properties.
• Organic Synthesis Reagent: Employed in research laboratories for Diels-Alder reactions and other cycloaddition or functionalization chemistry.
• Lubricant and Fuel Additive Component: Potential use as an intermediate for synthesizing performance-enhancing additives.

Basic Information

Product Name	1,2,4,4-Tetramethylcyclopentene
CAS No.	65378-76-9
Molecular Formula	C9H16
Molecular Weight	124.22 g/mol
Synonyms	1,2,4,4-Tetramethyl-1-cyclopentene; Tetramethylcyclopentene; 1-Cyclopentene, 1,2,4,4-tetramethyl-; NSC 169102
EINECS	Contact for details

Quality Control

Our 1,2,4,4-Tetramethylcyclopentene is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including GC, GC-MS, and NMR, to ensure high purity and consistency. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are provided with each shipment to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, well-ventilated place away from heat, sparks, and open flame. Due to its highly volatile and easily oxidized nature, it is recommended to store under an inert atmosphere (e.g., nitrogen or argon) at temperatures between 2°C and 8°C for long-term stability. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 95.0%
Purity (GC Area %)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Specific Gravity (20°C)	0.78 - 0.82
Refractive Index (n20/D)	1.440 - 1.450

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