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US 6,582,940 B1Granted
Method for producing calcium pantothenate
AssigneeDaiichi Fine Chemical Co., Ltd.
InventorsNorikazu Takahashi, Tomoko Nozaki, Sotohiko Eimori, Motoo Shiba
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Abstract
A method for preparing nondeliquescent crystalline calcium pantothenate which comprises the steps of: (1) stirring a supersaturated aqueous solution containing calcium pantothenate in a ratio of 60% (W/W) or more, for example, by using a grinder mill, to obtain a crystal suspension; and (2) drying the suspension. A nondeliquescent crystalline calcium pantothenate which is substantially free from an organic solvent can be efficiently prepared.
Claims10
A method for preparing a nondeliquescent crystalline calcium pantothenate comprising:
- preparing a supersaturated aqueous solution, without adding an organic solvent, containing calcium pantothenate in a concentration of no less than 60% (W/W);
- stirring the solution to obtain a crystal suspension;
- and
- drying the suspension.
1 more element
Dependencies are inferred from the claim text.