Description

11-Phenoxyundecanoic Acid Trimethylsilyl Ester is a specialized organosilicon derivative of a long-chain phenoxy fatty acid, serving as a crucial protected intermediate in advanced organic synthesis. Its primary value lies in its role as a silyl-protected carboxylic acid, enabling selective reactions and simplifying purification processes in complex molecule construction. This compound is essential for researchers and process chemists in the pharmaceutical, agrochemical, and advanced materials sectors who require high-purity, moisture-sensitive building blocks for developing active ingredients and functional polymers.

Application

• Pharmaceutical Intermediate: Used as a protected synthon in the multi-step synthesis of complex drug candidates, particularly those requiring the incorporation of long alkyl chains with terminal phenoxy groups.
• Agrochemical Synthesis: Serves as a key precursor for developing novel herbicides, fungicides, and plant growth regulators where the phenoxyundecanoic acid moiety is biologically active.
• Polymer & Material Science: Acts as a monomer or functionalization agent in the production of specialty polyesters, polyamides, and silicone-modified polymers with tailored surface properties.
• Liquid Crystal & OLED Research: Utilized in the synthesis of organic semiconductors and liquid crystal materials due to its ability to influence molecular alignment and electronic properties.
• Organic Synthesis Reagent: Functions as a versatile building block in academic and industrial R&D for constructing complex molecular architectures via cross-coupling, condensation, and cyclization reactions.
• Flavor & Fragrance Precursor: Employed in the controlled synthesis of macrocyclic musk compounds and other high-value aroma chemicals.

Basic Information

Product Name	11-Phenoxyundecanoic Acid Trimethylsilyl Ester
CAS No.	21273-14-3
Molecular Formula	C20H34O3Si
Molecular Weight	350.57 g/mol
Synonyms	Trimethylsilyl 11-phenoxyundecanoate; 11-Phenoxyundecanoic Acid TMS Ester; Undecanoic acid, 11-phenoxy-, trimethylsilyl ester; Phenoxyundecanoic Acid Trimethylsilyl Ester; TMS-11-Phenoxyundecanoate; 11-Phenoxyundecylic Acid Trimethylsilyl Ester; Trimethyl(11-phenoxyundecanoyloxy)silane
EINECS	Contact for details

Quality Control

Every batch of 11-Phenoxyundecanoic Acid Trimethylsilyl Ester is manufactured and tested under a strict quality management system to ensure consistency and reliability for critical synthetic applications. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing purity, identity, and impurity profiles as determined by advanced analytical techniques. Our quality commitment aligns with cGMP principles for pharmaceutical intermediates, ensuring traceability and documentation for regulated industries.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent hydrolysis and maintain product integrity. Keep away from heat, open flames, and incompatible materials such as strong acids, bases, and oxidizing agents.

Specification

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

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