Description

2-(4-tert-Butyl-2-Cyclopentylphenoxy)-1-Methylethyl Chloroformate is a specialized chloroformate ester derivative, primarily utilized as a key synthetic intermediate in advanced organic synthesis. Its molecular structure, featuring both a bulky tert-butyl-cyclopentylphenoxy group and a reactive chloroformate moiety, makes it a valuable reagent for constructing complex molecules and introducing specific functional groups. This compound is essential for research and development chemists in the pharmaceutical and agrochemical industries, where it is used in the synthesis of active ingredients and novel chemical entities. CAS No. 85720-84-9.

Application

• Pharmaceutical Intermediate: A critical building block in the synthesis of active pharmaceutical ingredients (APIs), particularly for compounds requiring a sterically hindered phenolic ether linkage.
• Agrochemical Synthesis: Used in the research and production of advanced pesticides, herbicides, and plant growth regulators where its specific phenoxy structure is incorporated.
• Polymer Chemistry: Serves as a monomer or chain modifier in the synthesis of specialty polymers, such as polycarbonates or polyesters with tailored properties.
• Chemical Research & Development: A versatile reagent in academic and industrial R&D labs for constructing complex molecular architectures and exploring new synthetic pathways.
• Liquid Crystal & OLED Material Precursor: Potential use in the synthesis of organic electronic materials due to its rigid, bulky aromatic component.
• Protecting Group Reagent: Can be employed for the temporary protection of alcohols or phenols during multi-step synthetic sequences.

Basic Information

Product Name	2-(4-tert-Butyl-2-Cyclopentylphenoxy)-1-Methylethyl Chloroformate
CAS No.	85720-84-9
Molecular Formula	C19H27ClO3
Molecular Weight	338.87 g/mol
Synonyms	1-Methylethyl 2-(4-tert-butyl-2-cyclopentylphenoxy)chloroformate; 2-(4-tert-Butyl-2-cyclopentylphenoxy)propyl chloroformate; Isopropyl 2-(4-tert-butyl-2-cyclopentylphenoxy)chloroformate; Chloroformic acid 2-(4-tert-butyl-2-cyclopentylphenoxy)-1-methylethyl ester; 85720-84-9; 4-tert-Butyl-2-cyclopentylphenoxy isopropyl chloroformate
EINECS	Contact for details

Quality Control

Our 2-(4-tert-Butyl-2-Cyclopentylphenoxy)-1-Methylethyl Chloroformate is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high purity for research and industrial use. While typically supplied at technical or research grades, specifications including purity (by HPLC or GC) and identity confirmation (by IR and NMR) are rigorously monitored. A comprehensive Certificate of Analysis (COA) detailing all relevant parameters is provided with each shipment to support your quality assurance processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled 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. Keep away from heat, sparks, open flames, and incompatible materials such as strong bases, amines, and alcohols.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (HPLC/GC)	≥ 95.0% (Contact for higher grades)
Water Content (KF)	≤ 0.5%

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