PRAVASTATIN SODIUM
PROBLEM TO BE SOLVED: To provide a crystal of pravastatin sodium and a method for preparation of the crystal of pravastatin sodium. SOLUTION: The invention relates to the method for preparing the pravastatin sodium in a crystal state, comprises following steps, (a) preparing a solution containing pr...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | PROBLEM TO BE SOLVED: To provide a crystal of pravastatin sodium and a method for preparation of the crystal of pravastatin sodium. SOLUTION: The invention relates to the method for preparing the pravastatin sodium in a crystal state, comprises following steps, (a) preparing a solution containing pravastatin and sodium cation in a lower aliphatic alcohol (for example ethanol), (b) adding ethyl acetate to the solution, and (c) crystallizing the pravastatin sodium salt from the solution. COPYRIGHT: (C)2005,JPO&NCIPI |
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