A pharmaceutically-acceptable salt of a heterocyclic compound according to Formula 1:
wherein R1 or R2 comprise at least one carboxylate functional group;
E1 and E2 are either N or O;
said salt further comprises at least one cation; and
wherein said salt is not a lithium salt of 2,5-diaspartyl-3,6-diketopiperazine or 2,5-diglutamyl-3,6-diketopiperazine and said salt is in a solid form.
符合式 1 的
杂环化合物的药学上可接受的盐:
其中 R1 或 R2 包含至少一个
羧酸官能团;
E1 和 E2 是 N 或 O;
所述盐还包括至少一个阳离子;以及
其中所述盐不是 2,5-二天冬
氨酰-3,6-二酮
哌嗪或 2,5-二谷
氨酰-3,6-二酮
哌嗪的
锂盐,且所述盐为固体形式。