γ-Glu-Gly (gamma-Glutamylglycine), a γ-glutamyl dipeptide, is a human lipid metabolite with a structure resembling that of GABA (γ-aminobutyric acid). It functions as an antagonist of excitatory amino acids.

L-Arginine is the nitrogen donor for synthesis of nitric oxide, a potent vasodilator that is deficient during times of sickle cell crisis.

Fmoc-L-glutamic acid 5-tert-butyl ester (Fmoc-Glu(OtBu)-OH) is a glutamic acid derivative.