N-Acetyl-L-phenylalanine is an essential amino acid produced for medical feed and nutritional applications. It appears in large amount in urine of patients with phenylketonuria which is a human genetic disorder due to the lack of phenylalanine hydroxylase the enzyme necessary to metabolize phenylalanine to tyrosine.

Arctiin(NSC 315527), a plant lignan that can be extracted from the Arctium lappa (burdock) seeds, is a possible environmental endocrine disruptor compound and have been shown to influence sex hormone metabolism as well as protein synthesis, steroid biosynthesis.

Galanin (1-19), human is the 1-19 fragment of the human galanin. Galanin (GAL) is a widely distributed neuropeptide with diverse biological effectsincluding modulation of hormone release, antinociception and modification of feeding behavior.