Crustacean cardioactive peptide (CCAP) is a highly conserved, amidated cyclic nonapeptide with the primary structure PFCNAFTGC-NH2 (ProPheCysAsnAlaPheTyrGlyCys-NH2) and a disulfide bridge between Cys3 and Cys9. It is found in crustaceans and insects where it behaves as a cardioaccelerator, neuropeptide transmitter for other areas of the nervous system and a hormone.

Guanoclor (INN), also known as guanochlor, is a sympatholytic drug. It is known to bind to non-adrenergic sites in pig kidney membranes.

GsMTx4 TFA is a spider venom peptide that selectively inhibits cationic permeable mechanically-sensitive channels (MSCs) belonging to the Piezo and TRP channel families.