Description

1,5,5-Trimethylcyclopentadiene is a highly reactive, substituted cyclopentadiene derivative that serves as a crucial building block in advanced organic synthesis. Its unique structure, featuring a strained ring and multiple methyl groups, makes it a valuable precursor for synthesizing complex ligands, specialty polymers, and fine chemicals. This compound is primarily sought by R&D chemists and process engineers in the pharmaceutical, agrochemical, and advanced materials sectors for developing novel catalysts and performance chemicals.

Application

• Pharmaceutical Intermediate: Used in the synthesis of complex, bioactive molecules and novel drug candidates.
• Catalyst & Ligand Synthesis: A key precursor for creating specialized organometallic catalysts and ligands used in asymmetric synthesis and polymerization reactions.
• Advanced Material Production: Employed in the development of specialty polymers, resins, and high-performance materials with tailored properties.
• Agrochemical Research: Serves as a building block for novel active ingredients and intermediates in crop protection chemistry.
• Fine Chemical Manufacturing: Utilized in the production of fragrances, flavors, and other high-value specialty chemicals.
• Academic & Industrial R&D: A valuable reagent for exploratory chemistry and process development in research laboratories.

Basic Information

Product Name	1,5,5-Trimethylcyclopentadiene
CAS No.	4249-09-6
Molecular Formula	C8H12
Molecular Weight	108.18 g/mol
Synonyms	1,5,5-Trimethyl-1,3-cyclopentadiene; Trimethylcyclopentadiene; 1,3-Cyclopentadiene, 1,5,5-trimethyl-; NSC 66484; 1,5,5-Trimethyl cyclopentadiene
EINECS	224-214-9

Quality Control

Our 1,5,5-Trimethylcyclopentadiene is manufactured under strict quality management systems. Every batch undergoes comprehensive analytical testing, including GC, NMR, and Karl Fischer titration, to ensure identity, purity, and consistency. We provide detailed Certificates of Analysis (COA) with each shipment, confirming compliance with agreed specifications. Our quality commitment supports applications requiring high-purity intermediates for sensitive chemical syntheses.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) in a cool, dry, and well-ventilated place. Due to its highly volatile and easily oxidized nature, the container should be kept tightly sealed and away from heat, sparks, and open flames. Recommended long-term storage temperature is 2-8°C.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 95.0%
Water Content (KF)	≤ 0.5%

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