1-Aminocyclobutane-1, 3-dicarboxylic acid is an effective and specific N-methyl-D-aspartate receptor agonist.

Nicotinuric acid is an acyl glycine which is normally minor metabolites of fatty acids. Acyl glycines are produced through the action of glycine N-acyltransferase.

Uty HY Peptide (246-254) is a male-specific graft antigen H-Y derived from the H-Y epitopes of the widely transcribed tetrapeptide duplication gene H-YDB on the Y chromosome (Uty) protein。