Ac-dl-pro-oh1074-79-9100 % similar N-Acetyl-L-proline68-95-1100 % similar L-Alanyl-L-proline13485-59-161 % similar 1-(2-Chloroacetyl)-L-proline23500-10-958 % similar Glycyl-L-proline704-15-457 % similar N-Methyl-L-proline475-11-656 % similar N-Acetyl-4-thiazolidinecarboxylic acid5025-82-154 % similar (4R)-3-Acetyl-4-thiazolidinecarboxylic acid54323-50-154 % similar Captopril62571-86-254 % similar Oxaceprol33996-33-753 % similar 1-[(2S)-3-(Acetylthio)-2-methyl-1-oxopropyl]-L-proline64838-55-751 % similar 1-[(tert-Butoxy)carbonyl]piperidine-2-carboxylic acid118552-55-950 % similar 1-Acetyl-4-piperidinecarboxylic acid25503-90-650 % similar N-Methyl-D-pipecolic acid41447-17-050 % similar Benzyloxycarbonyl-L-proline1148-11-449 % similar N-(Benzyloxycarbonyl)-D-proline6404-31-549 % similar Ucb-L 057102849-49-045 % similar Levetiracetam acid103833-72-345 % similar N-(9-Fluorenylmethoxycarbonyl)-D-proline101555-62-842 % similar Fmoc-pro-oh71989-31-642 % similar