Patent ID: 9126928
Filing Date: 2015-09-08
Classification: C07D

Abstract:
1. A 4-hydroxy-2-oxo-1-pyrrolidineacetamide racemate crystal form I, having a diffraction peak at a diffraction angle 20 selected from the group consisting of 12.011, 15.318, 17.407, 19.633, 21.228, 22.052, 24.577, 25.223, 27.647, 28.161, 29.109, 30.805, 31.276, 31.766, 32.77, 33.477, 35.252, 35.645, 36.236, 37.379, 39.56, 40.489, 41.256, 41.948, 43.443 and 44.628 degrees.