Protokylol hydrochloride(Caytine hydrochloride, JB-251 hydrochloride) is a salt form of protokylol and is an agonist of β-adrenergic receptor. Protokylol hydrochloride is also used as a bronchodilator.

Fasoracetam (NS 105) is a metabotropic glutamate receptor activator with a potential to treat vascular dementia.

Lotiglipron (PF-07081532) is an orally active GLP-1R agonist. It reduces glucose and body weight, and has the potential to be used in Type 2 diabetes mellitus (T2DM) research.

Icalcaprant is a kappa-opioid receptor antagonist.