TBu-C18 diacid-D-Glu-OtBu

T-butyl-C18-D-Glu-OtBu is comprised of an octadecanedioic acid with a terminal t-butyl ester and a glutamic acid, which is also protected by a terminal t-butyl ester. The t-butyl groups can be deprotected under acidic conditions. Glutamic acid is an α-amino acid that is used in the biosynthesis of proteins.