73488-89-8 N-Trifluoroacetyl-L-alanyl-L-phenylalaninal N-Trifluoroacetyl-ala-phe-aldehyde N-Trifluoroacetylalanylphenylalaninal Propanamide, N-(1-formyl-2-phenylethyl)-2-((trifluoroacetyl)amino)-, (S-(R*,R*))- Tfaapa