α-Ethyl-2-oxo-1-pyrrolidineacetamide33996-58-6100 % similar Levetiracetam acid103833-72-368 % similar Brivaracetam357336-20-053 % similar 1,1-Dimethylethyl (2S)-2-(aminocarbonyl)-1-pyrrolidinecarboxylate35150-07-342 % similar N-Cyclohexyl-2-pyrrolidone6837-24-741 % similar Piracetam7491-74-938 % similar N-Octylpyrrolidone2687-94-737 % similar N-Dodecyl-2-pyrrolidone2687-96-937 % similar N-Ethyl-2-pyrrolidone2687-91-436 % similar 1-(2-Chloroacetyl)-L-proline23500-10-936 % similar N-Methyl-2-pyrrolidone872-50-435 % similar 1-(Trimethylsilyl)-2-pyrrolidinone14468-90-735 % similar N-Butyl-2-pyrrolidone3470-98-235 % similar Glycyl-L-proline704-15-435 % similar Sepilift dphp41672-81-534 % similar Lauric acid diethanolamide120-40-133 % similar 4-Ethyloctanoic acid16493-80-433 % similar 2-Oxo-1-pyrrolidineacetic acid53934-76-233 % similar Laurocapram59227-89-333 % similar (S)-2-Aminobutyramide hydrochloride7682-20-433 % similar