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L-Histidine hydrochloride (1:?)1007-42-742 % similar D-Histidine hydrochloride6341-24-842 % similar L-Histidine monohydrochloride645-35-242 % similar DL-Histidine hydrochloride6459-59-242 % similar N-(Hydroxymethylidene)tryptophan16108-03-541 % similar D-Tyrosine556-02-541 % similar DL-Tyrosine556-03-641 % similar Tyrosine60-18-441 % similar Acetyl-L-tryptophan1218-34-441 % similar (R)-Tryptophan methyl ester monohydrochloride14907-27-841 % similar N-Acetyl-D-tryptophan2280-01-541 % similar Methyl 2-amino-3-(1H-indol-3-yl)propanoate hydrochloride5619-09-041 % similar Tryptophan methyl ester hydrochloride7524-52-941 % similar N-Acetyl-DL-tryptophan87-32-141 % similar Valyltryptophan24587-37-941 % similar 5-Fluoro-1H-indole-3-carboxylic acid23077-43-240 % similar D-Dopa5796-17-840 % similar L-M-Tyrosine587-33-740 % similar DOPA59-92-740 % similar Dl-dopa63-84-340 % similar