Proline147-85-3100 % similar D-Proline344-25-2100 % similar Dl-proline609-36-9100 % similar (+)-Pipecolic acid1723-00-888 % similar Pipecolic acid3105-95-188 % similar Pipecolic acid4043-87-288 % similar Pipecolic acid535-75-188 % similar Azetidine-2-carboxylic acid2133-34-875 % similar (±)-2-Azetidinecarboxylic acid2517-04-675 % similar (S)-Piperazine-2-carboxylic acid147650-70-255 % similar Edds20846-91-753 % similar (2R)-2-Pyrrolidinecarboxamide62937-45-552 % similar L-Prolinamide7531-52-452 % similar (S)-Morpholine-3-carboxylic acid106825-79-052 % similar 3-Thiomorpholinecarboxylic acid20960-92-352 % similar (R)-2-Piperazinecarboxylic acid dihydrochloride126330-90-350 % similar L-Prolylglycine2578-57-649 % similar (2S,3As,7as)-octahydroindole-2-carboxylic acid80875-98-548 % similar (-)-Nipecotic acid25137-00-248 % similar Nipecotic acid498-95-348 % similar