Description

2-Cyclopenten-1-One, 2,3,5,5-Tetramethyl-4-Methylene- (9Ci) is a specialized, high-purity chemical intermediate featuring a unique functionalized cyclopentenone core. This compound matters for its role as a versatile building block in advanced organic synthesis, enabling the construction of complex molecular architectures. It is primarily needed by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and fragrance industries for creating novel active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: Serves as a key synthon in the research and development of new active pharmaceutical ingredients (APIs), particularly for compounds with complex cyclic structures.
• Agrochemical Synthesis: Used in the production of advanced pesticides and herbicides, where its functionalized ring system can contribute to novel modes of action.
• Fragrance & Flavor Chemistry: Acts as a precursor for synthesizing musky or woody odorants and specialty flavor compounds due to its methylated, unsaturated ketone structure.
• Material Science Research: Employed in the development of novel polymers and organic electronic materials as a functional monomer or cross-linking agent.
• Academic & Industrial R&D: A valuable reagent for methodological studies in organic chemistry, including cycloaddition reactions and catalysis research.
• Fine Chemical Production: Utilized in custom synthesis and contract manufacturing for producing high-value, low-volume specialty chemicals.

Basic Information

Item	Detail
Product Name	2-Cyclopenten-1-One, 2,3,5,5-Tetramethyl-4-Methylene- (9Ci)
CAS No.	709026-13-1
Molecular Formula	C10H16O
Molecular Weight	152.23 g/mol
Synonyms	2,3,5,5-Tetramethyl-4-methylen-2-cyclopenten-1-one; 4-Methylene-2,3,5,5-tetramethyl-2-cyclopenten-1-one; 2-Cyclopenten-1-one, 4-methylene-2,3,5,5-tetramethyl-; Tetramethyl methylene cyclopentenone
EINECS	Contact for details

Quality Control

Every batch of 2-Cyclopenten-1-One, 2,3,5,5-Tetramethyl-4-Methylene- (9Ci) is produced and tested under a strict quality management system. We ensure high purity and consistent performance through advanced analytical techniques including GC, HPLC, and NMR. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is 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, dry, well-ventilated area at room temperature (15-25°C). Keep away from heat, sparks, and open flame. Due to its light-sensitive nature, containers should be kept in opaque or amber packaging, or stored in darkness.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (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.