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(2R,4S)-4-Hydroxypyrrolidine-2-carboxylic acid3398-22-935 % similar 3,4-Dehydro-L-proline4043-88-335 % similar Homocystine462-10-235 % similar Hydroxyproline51-35-435 % similar Isonipecotic acid hydrochloride5984-56-535 % similar cis-4-Hydroxy-L-proline618-27-935 % similar Homocystine626-72-235 % similar DL-Homocystine870-93-935 % similar L-5,5-Dimethylthiazolidine-4-carboxylic acid72778-00-835 % similar 1,2,3,4,5,6-Cyclohexanehexacarboxylic acid2216-84-435 % similar Endothall145-73-334 % similar 3-Chlorocyclobutane-1-carboxylic acid35207-71-734 % similar 3,5-Dioxocyclohexanecarboxylic acid42858-60-634 % similar (1S,2S,5R)-3-Azabicyclo[3.1.0]hexane-2-carboxylic acid22255-16-934 % similar (-)-Nipecotic acid25137-00-234 % similar Nipecotic acid498-95-334 % similar 2-Hydroxy-4-(methylthio)butyric acid583-91-534 % similar (S)-(+)-Nipecotic acid59045-82-834 % similar Nipecotic acid60252-41-734 % similar (2R,4S)-4-Fluoropyrrolidine-2-carboxylic acid131176-02-833 % similar