ATI-2341, pepducin targeting the C-X-C chemokine receptor type 4 (CXCR4), is an allosteric agonist activating the inhibitory heterotrimeric G protein (Gi) to promote inhibition of cAMP production and induce calcium mobilization.

Methoxy-X04, a derivative of Congo red and Chrysamine-G, is a brain-permeable fluorescent probe for amyloid-β (Aβ).

TRH-βNA is a substrate for determining the membrane TRH-deamidating enzyme (TRH-DE) activity and membrane pyroglutamyl aminopeptidase II (PPII) activity.