Description

Cyclopenteneethanol, 1-Methansulfonate CAS NO 73779-38-1 is a specialized organic intermediate featuring a reactive methanesulfonate (mesylate) ester group attached to a cyclopenteneethanol backbone. This molecular architecture makes it a valuable building block for the synthesis of more complex molecules, particularly in pharmaceutical research and fine chemical manufacturing. It is primarily sought after by R&D chemists and process development scientists in the life sciences and advanced materials sectors.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of active pharmaceutical ingredients (APIs), especially those containing cyclopentane or modified sugar moieties.
• Nucleoside/Nucleotide Chemistry: Used in the preparation of modified nucleosides and nucleotides for antiviral or anticancer drug discovery programs.
• Polymer Science: Serves as a functional monomer or cross-linking agent for creating specialty polymers with unique thermal or mechanical properties.
• Ligand and Catalyst Development: Employed in the construction of chiral ligands and organometallic catalysts for asymmetric synthesis.
• Agrochemical Synthesis: Intermediate in the production of novel herbicides, fungicides, or plant growth regulators.
• Material Science Research: Building block for liquid crystals, organic semiconductors, and other advanced electronic materials.

Basic Information

Product Name	Cyclopenteneethanol, 1-Methansulfonate
CAS No.	73779-38-1
Molecular Formula	C8H14O4S
Molecular Weight	206.26 g/mol
Synonyms	1-(Methanesulfonyloxy)-2-(cyclopenten-1-yl)ethane; 2-(Cyclopent-1-en-1-yl)ethyl methanesulfonate; Cyclopent-1-ene-1-ethanol, methanesulfonate; 2-Cyclopenten-1-ylethyl methanesulfonate; Mesylate ester of cyclopenteneethanol; (2-Cyclopenten-1-ylethyl) mesylate; 1-Cyclopentene-1-ethanol, methanesulfonate
EINECS	Contact for details

Quality Control

Every batch of Cyclopenteneethanol, 1-Methansulfonate is produced and tested under a strict quality management system. We ensure compliance with relevant industry standards for fine chemical intermediates. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to guarantee batch-to-batch consistency and reliable performance in your synthetic processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent degradation.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Related Substances (HPLC)	Individual impurity ≤ 1.0%; Total impurities ≤ 3.0%

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