81363-78-2 AMFMTME Methyl alpha-fluoromethyl-4-tyrosine Tyrosine, alpha-(fluoromethyl)-, methyl ester alpha-Fluoromethyl-para-tyrosine methyl ester alpha-Monofluoromethyl-4-tyrosine methyl ester alpha-Monofluoromethyltyrosine methyl ester