Description

Tetrafluoro-2-(Pentafluoroethoxy)Ethanesulfonic Acid Trimethylsilyl Ester is a high-value, fluorinated organosilicon intermediate with unique chemical reactivity. This compound is critical for introducing perfluoroalkoxy sulfonate functionalities into complex molecules, enabling advanced material properties. It is primarily sought by researchers and manufacturers in the pharmaceutical, agrochemical, and specialty polymer industries for applications requiring enhanced stability, lipophilicity, or specific surface activity.

Application

• Pharmaceutical Intermediate: Used in the synthesis of novel active pharmaceutical ingredients (APIs), particularly for introducing metabolically stable, bioisosteric groups.
• Agrochemical Synthesis: Serves as a key building block for creating advanced herbicides, fungicides, and insecticides with improved environmental and performance profiles.
• Polymer & Material Science: Employed in the production of specialty fluoropolymers and surface-modifying agents to impart oil/water repellency, chemical resistance, and low surface energy.
• Lithium-Ion Battery Electrolytes: Investigated as a potential precursor or additive for next-generation electrolyte formulations to enhance battery safety and performance.
• Catalyst & Ligand Development: Utilized in the preparation of novel catalysts and ligands for demanding synthetic transformations in organic chemistry.
• Chemical Research & Development: A versatile reagent for academic and industrial R&D exploring new fluorination methodologies and functional materials.

Basic Information

Product Name	Tetrafluoro-2-(Pentafluoroethoxy)Ethanesulfonic Acid Trimethylsilyl Ester
CAS No.	136049-37-1
Molecular Formula	C7H6F9O4SSi
Molecular Weight	418.24 g/mol
Synonyms	2,2,3,3-Tetrafluoro-3-[(pentafluoroethoxy)methanesulfonyl]oxypropane, Trimethylsilyl Ester; Trimethylsilyl Tetrafluoro-2-(pentafluoroethoxy)ethanesulfonate; Perfluoro(2-ethoxyethane)sulfonic Acid Trimethylsilyl Ester; TMS Ester of PFEESA; (Pentafluoroethoxy)tetrafluoroethanesulfonic Acid TMS Ester; F9E-TMS; CAS 136049-37-1
EINECS	Contact for details

Quality Control

Our Tetrafluoro-2-(Pentafluoroethoxy)Ethanesulfonic Acid Trimethylsilyl Ester is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including NMR (¹H, ¹⁹F, ¹³C), HPLC, and GC analysis, to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing all specifications are provided and can be tailored to meet specific customer or regulatory requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place. Due to its hygroscopic (moisture-sensitive) nature, the container should be kept sealed under an inert atmosphere (e.g., nitrogen or argon) after opening. Recommended long-term storage temperature is 2-8°C.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC)	≥ 97.0%
Purity (HPLC)	≥ 96.0%
Water Content (KF)	≤ 0.5%

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