Omeprazole Sodium semihydrate and preparation method thereof
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United States of America Patent
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Dec 5, 2017
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Nov 20, 2015
filing date -
Apr 2, 2015
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Abstract
It discloses Omeprazole Sodium semihydrate and preparation method thereof, wherein every mole of Omeprazole Sodium semihydrate contains 0.5 mole of water, and it has an X-ray diffraction pattern comprising characteristic peaks at diffraction angles 2θ of 6.26°±0.1°, 11.10°±0.1°, 12.20°±0.1°, 15.58°±0.1°, 16.02°±0.1°, 17.12°±0.1°, 19.08°±0.1°, 21.00°±0.1°, 22.68°±0.1°, 23.48°±0.1°, 24.08°±0.1°, 26.52°±0.1° and 28.08°±0.1°. A raw material of Omeprazole Sodium hydrate is added into an organic solvent, stirring for 2˜9 hours at constant temperature of 25˜60° C., thereafter Omeprazole Sodium semihydrate is provided after filtrating and drying.
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