PREPARATION PROCESS OF THE SODIUM SALT OF ESOMEPRAZOLE
A preparation process of esomeprazole sodium substantially free of sulfone impurity including the steps of: a) combining either esomeprazole with a (C3-C8)-ketone or a mixture thereof, a sodium alkoxide, and a (C1-C5)-alcohol, or esomeprazole sodium with a (C3-C8)-ketone or a mixture thereof and a (...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | A preparation process of esomeprazole sodium substantially free of sulfone impurity including the steps of: a) combining either esomeprazole with a (C3-C8)-ketone or a mixture thereof, a sodium alkoxide, and a (C1-C5)-alcohol, or esomeprazole sodium with a (C3-C8)-ketone or a mixture thereof and a (C1-C5)-alcohol; and b) recovering the esomeprazole sodium formed from the reaction media by filtration. |
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