Fenoldopam hydrochloride is a selective D1-like dopamine receptor partial agonist. It acts as a vasodilator in vivo and does not readily cross the blood-brain barrier. Fenoldopam HCl is also an α2-adrenoceptor antagonist in vitro.
L-Ornithine lactam is a synthetic intermediate. It has been used in the synthesis of dipeptidyl peptidase 4 (DPP-4) inhibitors, as well as signaling peptides.