Description

1-(Trimethylsiloxy)Cyclopentene is a versatile organosilicon compound primarily used as a key synthetic intermediate in organic chemistry. Its value lies in its role as a protected enol or enolate equivalent, enabling controlled carbon-carbon bond formation and functional group transformations under mild conditions. This reagent is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and advanced materials sectors who require high-purity building blocks for complex molecule synthesis.

Application

• Pharmaceutical Intermediate: A crucial building block in the synthesis of active pharmaceutical ingredients (APIs), particularly for compounds containing cyclopentane or modified five-membered ring structures.
• Agrochemical Synthesis: Used in the production of advanced pesticides and herbicides, where its reactivity allows for the introduction of specific functional groups.
• Organic Synthesis Reagent: Serves as a versatile enolate synthon in aldol, Michael, and alkylation reactions for constructing complex organic molecules in research and development.
• Material Science Precursor: Employed in the development of specialty polymers and silicon-containing hybrid materials with tailored properties.
• Flavor and Fragrance Industry: Acts as an intermediate for synthesizing specific aroma chemicals and terpenoid derivatives.

Basic Information

Product Name	1-(Trimethylsiloxy)Cyclopentene
CAS No.	19980-43-9
Molecular Formula	C8H16OSi
Molecular Weight	156.30 g/mol
Synonyms	Cyclopent-1-en-1-yloxytrimethylsilane; 1-(Trimethylsilyloxy)cyclopentene; Trimethyl(1-cyclopenten-1-yloxy)silane; 1-Cyclopenten-1-ol, trimethylsilyl ether; TMS enol ether of cyclopentanone; 1-Trimethylsiloxy-1-cyclopentene; (1-Cyclopentenyloxy)trimethylsilane
EINECS	243-415-4

Quality Control

Our 1-(Trimethylsiloxy)Cyclopentene is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including GC, NMR, and Karl Fischer titration, to ensure high purity and consistency. A comprehensive Certificate of Analysis (COA) detailing identity, assay, and impurity profiles is provided with every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at temperatures between 2°C and 8°C (refrigerated) for long-term stability. This product is hygroscopic (moisture-sensitive) and should be handled under an inert atmosphere (e.g., nitrogen or argon) to prevent degradation.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Water Content (KF)	≤ 0.5%

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