POLYMORPH FORMS OF N-(2,3-DIMETHYL-5,6,7,8-TETRAHYDROFURO 2,3-BQUINOLIN-4-YL)-2-(2- OXOPYRROLIDIN -1 -YL)ACETAMIDE

摘要

The invention relates to novel polymorph crystal forms A and B of N-(2,3-dimethyl-5,6,7,8-tetrahydrofuro[2,3-b]quinolin-4-yl)-2-(2-oxopyrrolidin-1-yl)acetamide: The compounds and pharmaceutical compositions thereof are useful for activating a malfunctioned cholinergic neuron that is associated with memory loss disturbances.