77626

N-tert-Butyldimethylsilyl-N-methyltrifluoroacetamide

for GC derivatization, LiChropur^™, ≥98.0% (GC)

• Synonym(s): MTBSTFA
• Linear Formula: CF₃CON(CH₃)Si(CH₃)₂C(CH₃)₃
• CAS Number: 77377-52-7
• Molecular Weight: 241.33
• Beilstein/REAXYS Number: 3606546
• MDL number: MFCD00009671
• UNSPSC Code: 12352111
• NACRES: NA.22

Properties

• grade: for GC derivatization
• assay: ≥98.0% (GC)
• form: liquid
• quality: LiChropur^™
• reaction suitability: reagent type: derivatization reagent; reaction type: Silylations
• technique(s): gas chromatography (GC): suitable
• refractive index: n20/D 1.402 (lit.)
• bp: 172-175 °C (lit.)
• density: 1.036 g/mL at 25 °C (lit.)
• storage temp.: 2-8°C
• SMILES string: CN(C(=O)C(F)(F)F)[Si](C)(C)C(C)(C)C
• InChI: 1S/C9H18F3NOSi/c1-8(2,3)15(5,6)13(4)7(14)9(10,11)12/h1-6H3
• InChI key: QRKUHYFDBWGLHJ-UHFFFAOYSA-N

Description

General description

N-tert-Butyldimethylsilyl-N-methyltrifluoroacetamide is a silylating reagent which replaces the active hydrogen with tert-Butyldimethylsilyl group. The tert-Butyldimethylsilyl derivatives are found to be more resistant to hydrolysis and stable compared to trimethylsilyl (TMS) derivatives. This reagent is suitable for GC-MS analysis since it produces mass spectra, which can be easily interpreted. It is widely used for the silylation of different alcohols, thiols, phenols, carboxylic acids, amines, and amides.

Application

N-tert-Butyldimethylsilyl-N-methyltrifluoroacetamide may be used as a derivatizing reagent for the determination of methionine sulfoxide and methionine in blood plasma and chlorpyrifos, diazinon and their major metabolites in sludge and sludge-fertilized agricultural soils using gas-chromatography coupled to mass spectrometry technique.

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Legal Information

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany

Safety Information

• pictograms: GHS02
• signalword: Warning
• hcodes: H226
• pcodes: P210 - P233 - P240 - P241 - P242 - P243
• Hazard Classifications: Flam. Liq. 3
• Storage Class: 3 - Flammable liquids
• wgk_germany: WGK 3
• flash_point_f: 113.0 °F - closed cup
• flash_point_c: 45 °C - closed cup