Description

2-Cyclopenten-1-One Ethylene Ketal is a versatile cyclic ketal derivative of cyclopentenone, serving as a crucial protected intermediate in advanced organic synthesis. This compound matters for its ability to mask the reactive carbonyl group, enabling selective transformations elsewhere on the molecule under conditions that would otherwise affect the ketone. It is primarily needed by research chemists and process development scientists in the pharmaceutical, agrochemical, and fragrance industries for constructing complex molecular architectures.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of prostaglandins, steroids, and other bioactive molecules with cyclopentane or cyclopentenone cores.
• Agrochemical Synthesis: Used in the production of certain pesticides and plant growth regulators where the protected carbonyl functionality is essential for specific reaction steps.
• Fine Chemical & Fragrance Manufacturing: Serves as a precursor for musk compounds and other specialty aroma chemicals, leveraging the stability of the ketal group.
• Academic & Industrial R&D: Employed in methodological development and total synthesis projects requiring robust carbonyl protection strategies.
• Material Science Precursor: Potential use in the synthesis of specialized polymers or ligands where the cyclic ketal structure imparts specific properties.

Basic Information

Product Name	2-Cyclopenten-1-One Ethylene Ketal
CAS No.	695-56-7
Molecular Formula	C7H10O2
Molecular Weight	126.15 g/mol
Synonyms	2-Cyclopenten-1-one, ethylene ketal; 1,4-Dioxaspiro[4.4]non-6-ene; 6,7-Dihydro-1,4-dioxaspiro[4.4]non-6-ene; Cyclopentenone ethylene ketal; 2-Cyclopentenone ethylene ketal; Ethylene ketal of 2-cyclopentenone; Spiro[1,3-dioxolane-2,4'-cyclopent-3'-ene]
EINECS	211-785-8

Quality Control

Our 2-Cyclopenten-1-One Ethylene Ketal is produced under strict quality management protocols. Each batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. We provide full traceability and Certificates of Analysis (COA) are available for all shipments, detailing key parameters such as assay and impurity profiles. Our quality systems are designed to meet the stringent requirements of research and development applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (typically 15-25°C). Keep away from heat, sparks, and open flame. For long-term storage, consider under an inert atmosphere to maintain optimal purity.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Refractive Index (n20D)	1.470 - 1.480
Density (g/mL, 20°C)	1.08 - 1.12

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