Description

9,10,18-Tris(Trimethylsilyloxy)Octadecanoic Acid Methyl Ester is a high-purity, organosilicon-modified fatty acid ester, valued for its role as a versatile synthetic intermediate and functional additive. Its unique structure, featuring multiple trimethylsilyloxy groups, imparts properties such as hydrophobicity and reactivity that are critical for advanced material synthesis. This compound is essential for researchers and manufacturers in the pharmaceutical, specialty chemical, and advanced polymer industries seeking to develop novel materials with tailored surface and performance characteristics.

Application

• Pharmaceutical Intermediate: Used in the synthesis of complex drug molecules, particularly where silyl-protected hydroxyl groups are required for selective reactions.
• Specialty Polymer Synthesis: Serves as a monomer or functional modifier for creating silicones, polyesters, and other polymers with enhanced hydrophobicity or specific release properties.
• Surface Modification Agent: Applied to impart water-repellent (hydrophobic) characteristics to surfaces of glass, metals, or textiles.
• Lubricant & Release Agent Formulation: Functions as a high-performance additive in specialty lubricants and mold release agents due to its silicon content.
• Chemical Research & Development: A key building block in organic synthesis for constructing complex molecular architectures in academic and industrial R&D settings.
• Cosmetic & Personal Care Ingredients: Potential use in high-end formulations as an emollient or conditioning agent with unique sensory and stability profiles.

Basic Information

Product Name	9,10,18-Tris(Trimethylsilyloxy)Octadecanoic Acid Methyl Ester
CAS No.	40707-76-4
Molecular Formula	C27H60O6Si3
Molecular Weight	565.0 g/mol (approx.)
Synonyms	Methyl 9,10,18-tris(trimethylsilyloxy)octadecanoate; Methyl 9,10,18-tris((trimethylsilyl)oxy)stearate; Octadecanoic acid, 9,10,18-tris(trimethylsilyloxy)-, methyl ester; TMS-protected methyl hydroxystearate; Tris-O-TMS methyl stearate derivative
EINECS	Contact for details

Quality Control

Our 9,10,18-Tris(Trimethylsilyloxy)Octadecanoic Acid Methyl Ester is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including chromatography (HPLC, GC) and spectroscopy (NMR, IR), to ensure identity, purity, and consistency. Certificates of Analysis (COA) documenting all critical parameters are provided with every shipment to support your quality assurance and regulatory needs.

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 degradation.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 0.5%
Residual Solvents (GC)	Meets ICH guidelines

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