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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 1090 (OTTO) Potassium hexamethyldisilazide solution 1 M in THF Cas 40949-94-8 - used in the preparation of poly(ethylene oxide).