129049-51-0 Emd 52297 L-threo-Pentonamide, 5-cyclohexyl-2,4,5-trideoxy-4-((N-(N-((1,1-dimethylethoxy)carbonyl)-L-phenylalanyl)-L-histidyl)amino)-N-(2-methyl-1-(((2H-tetrazol-2-ylmethyl)amino)carbonyl)butyl)-, (S-(R*,R*))- N-(tert-Butoxycarbonal)-phenylalanyl-histidyl-(4-amino-3-hydroxy-5-cyclohexyl)-pentacarbonyl-isoleucyl-(2-amidomethyl)tetrazol