4-[[(1,1-Dimethylethoxy)carbonyl]amino]-5-(dipentylamino)-5-oxo-pentanoic Acid Phenylmethyl Ester is an intermediate in synthesizing Lorglumide Sodium Salt (L469910), a nonpeptidic antagonist of the CCK A receptor, and minimally effective at the CCK B receptor. It blocks CCK -mediated muscle contraction, pancreatic growth and secretion.