N,O-Bis(trimethylsilyl)trifluoroacetamide with 1% trimethylchlorosilane Silyl-991 silylation reagent, for GC derivatisation

Supplier: MACHEREY-NAGEL
Warning

Synonyms: BSTFA+TMCS (99:1)

701490.1100 701490.150 701490.201
MANA701490.1100EA 716 GBP
MANA701490.1100 MANA701490.150 MANA701490.201
N,O-Bis(trimethylsilyl)trifluoroacetamide with 1% trimethylchlorosilane Silyl-991 silylation reagent, for GC derivatisation
N,O-Bis(trimethylsilyl)trifluoroacetamide with 1% trimethylchlorosilane

Silyl-991 is recommended for silylation of fatty acid amides, hindered hydroxyls and other compounds which are difficult to silylate (e.g., secondary alcoholes and amines).


  • Silylation can be applied on many compounds
  • Silylation reagents are easily prepared
  • In Silyl-991 mixture the strong TMS donor BSTFA is catalysed with 1% TMCS


Silyl-991 silylating reagent is a mixture of BSTFA + TMCS (99:1) without pyridene.

Formula: C₈H₁₈F₃NOSi₂
MW: 257,40 g/mol
Boiling Pt: 40 °C (12 mm Hg)
Density: 0,97 g/cm³
Flash Pt: 7 °C
MDL Number: MFCD00008269
CAS Number: 25561-30-2
UN: 3316
ADR: 9,II

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