申请人:Degussa Aktiengesellschaft
公开号:US04952706A1
公开(公告)日:1990-08-28
The new, crystalline trihydrates of sodium L- and D-2-pyrrolidone-5-carboxylate. These trihydrates can be obtained by adjusting the concentration and the temperature in an aqueous solution of sodium L- or D-2-pyrrolidone-5-carboxlate in such a manner that the solubility of the desired trihydrate is exceeded.
钠L-和D-2-吡咯烷酮-5-羧酸的新型结晶三水合物。这些三水合物可以通过调整钠L-或D-2-吡咯烷酮-5-羧酸的水溶液中的浓度和温度,使所需三水合物的溶解度超过来获得。