1-Pyrrolidineacetamide, 4-hydroxy-2-oxo- 4-Hydroxy-2-oxo-1-pyrrolidineacetamide 4-Hydroxypiracetam 5-21-12-00019 (Beilstein Handbook Reference) 62613-82-5 BRN 1529719 CCRIS 4221 CGP 21690E CT-848 Hydroxypiracetam ISF 2522 OXIRACETAM Oxiracetam [BAN:INN] Oxiracetamum [INN-Latin]