Homocitrulline is a metabolite that can be detected in larger amounts in the urine of individuals with urea cycle disorders. The accumulation of carbamyl phosphate due to a depleted supply of ornithine for the urea cycle may be responsible for the enhanced synthesis of homocitrulline and homoarginine in some cases.

Latrepirdine is an orally active, and neuroactive antagonist of multiple drug targets, including histamine receptors, GluR, and 5-HT receptors, used as an antihistamine drug.

GLP-1 moiety from Dulaglutide is a 31-amino acid fragment of Dulaglutide which is a glucagon-like peptide 1 receptor (GLP-1) agonist.