1-((1-(4-Methoxyphenyl)-5-oxo-3-pyrrolidinyl)carbonyl)piperidine 39630-18-7 5-22-06-00046 (Beilstein Handbook Reference) BRN 0434568 Piperidine, 1-((1-(4-methoxyphenyl)-5-oxo-3-pyrrolidinyl)carbonyl)-