Triethylsilyl trifluoromethanesulfonate - ≥98% , CAS No.79271-56-0

CAS: 79271-56-0 Cat. No.: T109491 Molecular Weight: 264.34 Beilstein Registry Number: 3590541 EC Number: 279-124-4

GRADE & PURITY ≥98%

Synonyms

TESOTf | Trifluoromethanesulfonic Acid Triethylsilyl Ester | Triethylsilyl Triflate | C7H15F3O3SSi | Triethylsilyl trifluromethanesulfonate | InChI=1/C7H15F3O3SSi/c1-4-15(5-2,6-3)13-14(11,12)7(8,9)10/h4-6H2,1-3H3 | Triethylsilyl trifluoromethanesulfonate

Storage

Store at 2-8°C,Argon charged

Shipped In

Wet ice

Overview

Triethylsilyl trifluoromethanesulfonate acts as a silylating agent. It is also useful as a Lewis acid catalyst. Further, it reacts with 1-diazo-3,3-dimethyl-butan-2-one to prepare 1-diazo-3,3-dimethyl-1-(triethylsilyl)-2-butanone.

Specifications

Synonyms

TESOTf | Trifluoromethanesulfonic Acid Triethylsilyl Ester | Triethylsilyl Triflate | C7H15F3O3SSi | Triethylsilyl trifluromethanesulfonate | InChI=1/C7H15F3O3SSi/c1-4-15(5-2, 6-3)13-14(11, 12)7(8, 9)10/h4-6H2, 1-3H3 | Triethylsilyl trifluoromethanesulfonate

Specifications & Purity

≥98%

Storage

Store at 2-8°C, Argon charged

Shipped In

Wet ice

This product requires cold chain shipping. Ground and other economy services are not available.

Purity

≥98%

Names and Identifiers

• Canonical Smiles: CC[Si](CC)(CC)OS(=O)(=O)C(F)(F)F
• IUPAC Name: triethylsilyl trifluoromethanesulfonate
• InChIKey: STMPXDBGVJZCEX-UHFFFAOYSA-N
• INCHI: 1S/C7H15F3O3SSi/c1-4-15(5-2,6-3)13-14(11,12)7(8,9)10/h4-6H2,1-3H3
• Isomeric SMILES: CC[Si](CC)(CC)OS(=O)(=O)C(F)(F)F
• WGK Germany: 3
• UN Number: 1760
• Packing Group: III
• Molecular Weight: 264.34
• Beilstein: 3590541
• Reaxy-Rn: 3590541

Taxonomic Classification

Taxonomy Tree

• Kingdom Organic compounds
  • Superclass Organic acids and derivatives
    • Class Organic sulfonic acids and derivatives
      • Subclass Organosulfonic acids and derivatives
        • Level5 Alkanesulfonic acids and derivatives
          • Level6 Alkanesulfonic acids
            • Level7 Trifluoromethanesulfonates

• Kingdom: Organic compounds
• Superclass: Organic acids and derivatives
• Class: Organic sulfonic acids and derivatives
• Subclass: Organosulfonic acids and derivatives
• Intermediate Tree Nodes: Alkanesulfonic acids and derivatives - Alkanesulfonic acids
• Direct Parent: Trifluoromethanesulfonates
• Alternative Parents: Trialkylheterosilanes Sulfonyls Methanesulfonates Trihalomethanes Organic metalloid salts Organofluorides Organic oxides Hydrocarbon derivatives Alkyl fluorides
• Molecular Framework: Aliphatic acyclic compounds
• Substituents: Trifluoromethanesulfonate - Methanesulfonate - Trialkylheterosilane - Sulfonyl - Trihalomethane - Organoheterosilane - Organic metalloid salt - Alkyl fluoride - Hydrocarbon derivative - Halomethane - Organic salt - Organosilicon compound - Organic oxide - Organosulfur compound - Organofluoride - Organohalogen compound - Organic oxygen compound - Alkyl halide - Aliphatic acyclic compound
• Description: This compound belongs to the class of organic compounds known as trifluoromethanesulfonates. These are alkanesulfonic acids, that contain a sulfonate group that is substituted with a trifluoromethyl group.
• External Descriptors: Not available

Data sources

1. Djoumbou Feunang Y, Eisner R, Knox C, Chepelev L, Hastings J, Owen G, Fahy E, Steinbeck C, Subramanian S, Bolton E, Greiner R, and Wishart DS. ClassyFire: Automated Chemical Classification With A Comprehensive, Computable Taxonomy. Journal of Cheminformatics, 2016, 8:61.

DOI: 10.1186/s13321-016-0174-y

Chemical and Physical Properties

• Solubility: Miscible with dichloromethane, hydrocarbons, dialkyl ethers and halogenated solvents. Immiscible with water.
• Sensitivity: Moisture sensitive.
• Refractive Index: 1.389-1.392
• Flash Point(°F): 150.8 °F
• Flash Point(°C): 72℃
• Boil Point(°C): 85-86°C
• Molecular Weight: 264.340 g/mol
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 6
• Rotatable Bond Count: 5
• Exact Mass: 264.046 Da
• Monoisotopic Mass: 264.046 Da
• Topological Polar Surface Area: 51.800 Ų
• Heavy Atom Count: 15
• Formal Charge: 0
• Complexity: 281.000
• Isotope Atom Count: 0
• Defined Atom Stereocenter Count: 0
• Undefined Atom Stereocenter Count: 0
• Defined Bond Stereocenter Count: 0
• Undefined Bond Stereocenter Count: 0
• The total count of all stereochemical bonds: 0
• Covalently-Bonded Unit Count: 1

XLogP3

References

1. Liang Li, Tao Yang, Kaixiang Ren, Xinchun Song, Shilin Wu, Hai-Wen Li, Zhipeng Jiang, Mengjun Sun, Yongtao Li.  (2025)  Silyl additives-driven synergistic inhibition engineering enables 4.9 V LiNi0.5Mn1.5O4 batteries beyond 300 Wh kg−1.  Materials Today,      [PMID:] [10.1016/j.mattod.2025.09.022]