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(4S)-4-Cyclohexyl-L-proline103201-78-150 % similar (4R)-4-(1,1-Dimethylethoxy)-L-proline79775-07-846 % similar H-Hyp-obzl hcl62147-27-745 % similar 3-Hydroxycyclobutanecarboxylic acid194788-10-845 % similar (2R,4R)-4-Methylpiperidine-2-carboxylic acid74892-81-244 % similar (S)-Piperazine-2-carboxylic acid147650-70-244 % similar (R)-Piperazine-2-carboxylic acid31321-68-344 % similar (3R,5S)-5-(Hydroxymethyl)pyrrolidin-3-ol hydrochloride478922-47-344 % similar Azetidine-2-carboxylic acid2133-34-844 % similar (±)-2-Azetidinecarboxylic acid2517-04-644 % similar D-Azetidine-2-carboxylic acid7729-30-844 % 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 5-Hydroxy-DL-lysine hydrochloride13204-98-340 % similar (+)-Pipecolic acid1723-00-840 % similar Pipecolic acid3105-95-140 % similar L-Thioproline34592-47-740 % similar Pipecolic acid4043-87-240 % similar