N-T-BOC-GLY-TRP-MET-ASP-PHE AMIDE tertiary-butyloxycarbonyl-glycyl-tryptophyl-methionyl-aspartyl-phenylalaninamide Boc-CCK Fragment 29-33 Boc-Gly-Trp-Met-Asp-Phe amide L-Phenylalaninamide, N-[(1,1-dimethylethoxy)carbonyl]glycyl-L-tryptophyl-L-methionyl-L-α-aspartyl- (9CI) Boc-gly-trp-met-asp-phe-NH2 Glycine pentagastrin Glycinepentagastrin