L-3-Phenyllactic acid (or PLA) is a chiral aromatic compound involved in phenylalanine metabolism. It is likely produced from phenylpyruvate via the action of lactate dehydrogenase.

Threonine is an essential amino acid in humans. It is abundant in human plasma particularly in newborns. Severe deficiency of threonine causes neurological dysfunction and lameness in experimental animals. Threonine is an immunostimulant which promotes the growth of thymus gland. It also can probably promote cell immune defense function.

W-2429 (NSC294836) is a non-narcotic analgesic that may be used in the study of neurological disorders.