130640-26-5 Balalom Boc-aib-ala-leu-ala-leu-aib-leu-ala-leu-aib-ome Butyloxycarbonyl-aminoisobutyryl-alanyl-leucyl-alanyl-leucyl-aminoisobutyryl-leucyl-alanyl-leucyl-aminoisobutyryl methyl ester