O-Benzyl-L-alanintoluol-p-sulfonat Methyl-L-alaninathydrochlorid 1-L-Alanyl-L-prolin N-L-Alanyl-L-tryptophan Benzyl-L-alaninathydrochlorid N-L-Alanyl-L-tyrosin (S)-2-Amino-N-(4-nitrophenyl)propionamidhydrochlorid