(+)-Pipecolic acid1723-00-835 % similar cis-4-Hydroxy-D-proline2584-71-635 % similar Pipecolic acid3105-95-135 % similar (R)-Piperazine-2-carboxylic acid31321-68-335 % similar (2R,4S)-4-Hydroxypyrrolidine-2-carboxylic acid3398-22-935 % similar L-Thioproline34592-47-735 % similar Pipecolic acid4043-87-235 % similar 4-Thiazolidinecarboxylic acid444-27-935 % similar 3-Cyclohexene-1-carboxylic acid4771-80-635 % similar Hydroxyproline51-35-435 % similar Pipecolic acid535-75-135 % similar (S)-(-)-3-Cyclohexene-1-carboxylic Acid5708-19-035 % similar (1R)-3-Cyclohexene-1-carboxylic acid5709-98-835 % similar cis-4-Hydroxy-L-proline618-27-935 % similar Thiazolidine-2-carboxylic acid65126-70-735 % similar 1,2,3,4,5,6-Cyclohexanehexacarboxylic acid2216-84-435 % similar Isonipecotic acid498-94-234 % similar 2,3-Dichloropropionic acid565-64-034 % similar 5-Norbornene-2-carboxylic acid120-74-134 % similar (1R,4S)-4-Aminocyclopent-2-ene-1-carboxylic acid134003-04-634 % similar