N-tert-butoxycarbonyl-3-(2-naphthyl)-L-alanine
(S)-3-[(S)-2-((S)-2-tert-Butoxycarbonylamino-3-naphthalen-2-yl-propionylamino)-hexanoylamino]-N-((S)-1-carbamoyl-2-phenyl-ethyl)-succinamic acid
(S)-3-[(S)-2-((S)-2-tert-Butoxycarbonylamino-3-naphthalen-2-yl-propionylamino)-hexanoylamino]-N-((S)-1-carbamoyl-2-phenyl-ethyl)-succinamic acid benzyl ester
(R)-2-naphthylalanine
methyl (S)-2-amino-3-(naphthalen-2-yl)propanoate hydrochloride