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(2R,4S)-4-Fluoropyrrolidine-2-carboxylic acid131176-02-842 % similar (2S,4S)-4-Fluoro-pyrrolidine-2-carboxylic acid2438-57-542 % similar (4R)-4-Fluoro-L-proline2507-61-142 % similar 1,2,3,4-Tetrahydro-3-isoquinolinecarboxylic acid hydrochloride41994-51-841 % similar Proline147-85-341 % similar D-Proline344-25-241 % similar DL-Proline609-36-941 % similar (2R,4R)-4-Methylpiperidine-2-carboxylic acid74892-81-241 % similar (S)-Piperazine-2-carboxylic acid147650-70-240 % similar (+)-Pipecolic acid1723-00-840 % similar Pipecolic acid3105-95-140 % similar (R)-Piperazine-2-carboxylic acid31321-68-340 % similar L-Thioproline34592-47-740 % similar Pipecolic acid4043-87-240 % similar 4-Thiazolidinecarboxylic acid444-27-940 % similar Pipecolic acid535-75-140 % similar Isonipecotic acid hydrochloride5984-56-540 % similar 3-Oxabicyclo[3.1.0]hexane-6-carboxylic acid693248-53-239 % similar (4R)-4-(1,1-Dimethylethoxy)-L-proline79775-07-839 % similar Ethylenediamine-N,N'-disuccinic acid20846-91-739 % similar