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D-Tryptophan153-94-638 % similar L-Phenylalanyl-L-phenylalanine2577-40-438 % similar (±)-Tryptophan54-12-638 % similar 3-(3-Benzo(b)thienyl)alanine72120-71-938 % similar Tryptophan73-22-338 % similar 2-Amino-3-(1,2-dihydro-2-oxoquinoline-4-yl)propanoic acid5162-90-338 % similar Methyl L-tyrosinate1080-06-438 % similar Droxidopa23651-95-838 % similar Rosmarinic acid20283-92-538 % similar α-[[3-(3,4-Dihydroxyphenyl)-1-oxo-2-propen-1-yl]oxy]-3,4-dihydroxybenzenepropanoic acid537-15-538 % similar 5-Fluoro-DL-tryptophan154-08-538 % similar 6-Methyl-DL-tryptophan2280-85-538 % similar 6-Chloro-L-tryptophan33468-35-838 % similar Beta-Phenylcysteine34317-61-838 % similar 5-Bromo-DL-tryptophan6548-09-038 % similar 6-Fluorotryptophan7730-20-338 % similar 5-Methyl-DL-tryptophan951-55-338 % similar L-Histidine hydrochloride (1:?)1007-42-737 % similar D-Histidine hydrochloride6341-24-837 % similar L-Histidine monohydrochloride645-35-237 % similar