Description

Methylcyclopentadiene is a highly reactive, cyclic diene monomer that serves as a critical building block in advanced organic synthesis. Its unique structure and reactivity make it an indispensable intermediate for producing specialty polymers, fine chemicals, and high-performance materials. This compound is essential for R&D and manufacturing in sectors such as pharmaceuticals, agrochemicals, and specialty resins, where precise molecular architecture is required. We supply high-purity Methylcyclopentadiene CAS NO 26519-91-5 to meet the stringent demands of global industrial and research applications.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of complex organic molecules and active pharmaceutical ingredients (APIs).
• Agrochemical Synthesis: Used in the production of advanced pesticides, herbicides, and plant growth regulators.
• Specialty Polymer & Resin Production: Serves as a monomer for creating Diels-Alder adducts, hydrocarbon resins, and high-temperature polymers.
• Fine Chemical Manufacturing: Intermediate for synthesizing flavors, fragrances, and other high-value specialty chemicals.
• Catalyst & Ligand Synthesis: Building block for creating novel organometallic complexes and catalytic systems.
• Fuel & Lubricant Additives: Component in the development of performance-enhancing additives for fuels and synthetic lubricants.
• Academic & Industrial Research: Used in R&D for exploring new organic reactions and material properties.

Basic Information

Item	Detail
Product Name	Methylcyclopentadiene
CAS No.	26519-91-5
Molecular Formula	C6H8
Molecular Weight	80.13 g/mol
Synonyms	1-Methylcyclopentadiene; 2-Methylcyclopentadiene; 3-Methylcyclopentadiene; Methyl cyclopentadiene; MCPD; Methyl-1,3-cyclopentadiene; 1-Methyl-1,3-cyclopentadiene; 5-Methylcyclopentadiene
EINECS	Contact for details

Quality Control

Our Methylcyclopentadiene is produced and handled under strict quality management protocols to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including Gas Chromatography (GC) and spectroscopic methods, to verify identity, potency, and impurity profiles. We provide a Certificate of Analysis (COA) with every shipment, detailing all critical quality attributes. Our quality system is designed to support applications requiring reliable and traceable raw materials.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, well-ventilated area away from heat sources and incompatible materials. Due to its highly volatile and easily oxidized nature, it is recommended to store under an inert atmosphere (e.g., nitrogen or argon) to maintain stability and prevent degradation. Keep container tightly sealed when not in use to minimize loss and exposure to air.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to reference spectrum
Assay (GC)	≥ 95.0%
Water Content (KF)	≤ 0.5%
Related Substances (GC)	Reported on COA

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