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Potassium bis(trimethylsilyl)amide is commonly abbreviated as KHMDS with molecular formula [(CH3)3Si]2NK. It is widely used as Bronsted base in synthesis.
P 1091 (OTTOKEMI) Potassium hexamethyldisilazide solution 0.5 M in Toluene Cas 40949-94-8 - used in the preparation of poly(ethylene oxide).