Pantolactone belongs to the class of organic compounds known as gamma-butyrolactones. gamma-Butyrolactones are compounds containing a gamma-butyrolactone moiety which consists of an aliphatic five-member ring with four carbon atoms one oxygen atom and bears a ketone group on the carbon adjacent to the oxygen atom.

(2R, 3S)-N-Benzoyl-3-phenylisoserine is an intermediate in the preparation of potent anticancer drug Paclitaxel used to study the location of the binding sites.

(±)-trans-ACPD is an equimolecular mixture of (1S, 3R)- and (1R, 3S)-ACPD. (±)-trans-ACPD is a selective agonist of the mGluR (metabotropic glutamate receptor).