CRYSTAL FORM OF (S)-4-HYDROXY-2-OXO-1-PYRROLIDINE ACETAMIDE, PREPARATION METHOD AND USE THEREOF

摘要

Crystal form I of (S)-oxiracetam and preparation method thereof are disclosed. The preparation method comprises the steps of preparing the crude product and crystallization, wherein acetone and water are used as solvents in the crystallization step. The use of the crystal form I of (S)-oxiracetam in preparing the medicine for preventing and treating memory dysfunction is also disclosed.