Not Less Than - 95%
N2-((R)-1-Ethoxy-1-oxo-4-phenylbutan-2-yl)-N6-(2,2,2-trifluoroacetyl)-D-lysine;(R)-2-(((R)-1-ethoxy-1-oxo-4-phenylbutan-2-yl)amino)-6-(2,2,2-trifluoroacetamido)hexanoic acid