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3-Carbamoyl-piperidine-1-carboxylic acid tert-butyl ester91419-49-734 % similar A661166227-08-234 % similar 1-(2-Chloroacetyl)-L-proline23500-10-933 % similar N-Acetyl-4-thiazolidinecarboxylic acid5025-82-133 % similar (4R)-3-Acetyl-4-thiazolidinecarboxylic acid54323-50-133 % similar N-Methyl-L-proline475-11-633 % similar 1-(4-Hydroxymethyl-piperidin-1-yl)-ethanone846057-27-033 % similar 1-Acetyl-2-pyrrolidone932-17-232 % similar Boc-L-proline15761-39-432 % similar (2R)-1-[(tert-Butoxy)carbonyl]pyrrolidine-2-carboxylic acid37784-17-132 % similar 1-[(tert-Butoxy)carbonyl]pyrrolidine-2-carboxylic acid59433-50-032 % similar Oxaceprol33996-33-732 % similar 1-Acetylpiperidine-4-carboxylic acid25503-90-632 % similar 1-Acetylpiperidine-4-carbonyl chloride59084-16-132 % similar Acetyl tetrapeptide-11928006-88-631 % similar Glycyl-L-prolyl-L-arginyl-L-prolyl-L-alaninamide135679-88-831 % similar Boc-L-pro-ome59936-29-731 % similar Captopril62571-86-231 % similar Boc-D-pro-ome73323-65-631 % similar Acetylcaprolactam1888-91-131 % similar