N-Acetyl-D-proline59785-68-133 % similar N-Acetyl-L-proline68-95-133 % similar L-Alanyl-L-proline13485-59-132 % similar 4-(Chloroacetyl)morpholine1440-61-532 % similar 2-Chloro-N,N-dimethylacetamide2675-89-031 % similar (αS)-α-Ethyl-2-oxo-1-pyrrolidineacetic acid102849-49-031 % similar Levetiracetam acid103833-72-331 % similar 1,1-Dimethylethyl (2R)-2-(((2,5-dioxo-1-pyrrolidinyl)oxy)carbonyl)-1-pyrrolidinecarboxylate102185-34-231 % similar 1-O-tert-Butyl 2-O-(2,5-dioxopyrrolidin-1-yl) (2S)-pyrrolidine-1,2-dicarboxylate3392-10-731 % similar Hexapeptide-91228371-11-631 % similar 3-Carbamoyl-piperidine-1-carboxylic acid tert-butyl ester91419-49-731 % similar Pipecolamide19889-77-130 % similar