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L-4-Pyridylalanine37535-49-247 % similar (αR)-α-Amino-4-pyridinepropanoic acid37535-50-547 % similar 1-Methyl-D-tryptophan110117-83-446 % similar 1-Methyl-L-tryptophan21339-55-946 % similar 2-Cyano-D-phenylalanine263396-41-446 % similar L-2-Cyanophenylalanine263396-42-546 % similar L-Tryptophyl-L-proline38136-75-346 % similar DL-Phenylalanine150-30-146 % similar Phenylalanine63-91-246 % similar D-Phenylalanine673-06-346 % similar 2-Amino-3-(1,2-dihydro-2-oxoquinoline-4-yl)propanoic acid hydrochloride4876-14-646 % similar D-Histidine351-50-845 % similar DL-Histidine4998-57-645 % similar Histidine71-00-145 % similar Indole-3-lactic acid1821-52-944 % similar 2-Amino-3-(2-(trifluoromethyl)phenyl)propanoic Acid3832-73-344 % similar D-2-Nitrophenylalanine169383-17-943 % similar L-2-Nitrophenylalanine19883-75-143 % similar L-Tryptophanylglycine7360-09-042 % similar L-Histidine hydrochloride (1:?)1007-42-742 % similar