ZINC PYRROLIDONECARBOXYLATE DIHYDRATE AND METHOD OF PRODUCING THE SAME
Application 461/CHE/2005 published 2007-07-27, filed 2005-04-21
The present invention aims at providing a convenient method of producing zinc pyrrolidonecarboxylate dihydrate, which is an industrially useful compound, with high optical purity, a higher yield, and better dissolution property. The present invention also provides a convenient method of producing zinc pyrrolidonecarboxylate dihydrate with higher optical purity, a higher yield, and better solution property by adding a zinc salt to an aqueous medium containing a salt of pyrrolidonecarboxylic acid as a starting material and separating a crystal from the aqueous medium at a specific pH.
Applicant
1)AHINOMOTO CO., INC
:15-1, KYOBASHI 1-CHOME, CHUIO-KU, TOKYO 104-8315 Japan
Inventor
1)KANATANI, EIZO 2)SANADA, SHINGO 3)KAWABATA, YASUSHI
International Info
Classification: A61K
Priority Information
129063-2004 Japan 2004-04-23