N-Acetylaspartic acid is a derivative of aspartic acid. It is the second most concentrated molecule in the brain after the amino acid glutamate. It is synthesized in neurons from the amino acid aspartate and acetyl coenzyme A (acetyl CoA).

Sulforhodamine B sodium salt is a fluorescent dye. It can be used from laser-induced fluorescence to the quantification of cellular proteins of cultured cells.

Methyl 4-aminobutanoate (GABA methyl ester) is a methyl ester compound derived from the condensation of aminobutyric acid and methanol.