Isorosmanol is an abietane-type diterpene isolated from Rosmarinus officinalis L. aerial parts, with antioxidant, neuroprotective and neurotrophic effects. Isorosmanol inhibits AChE activity and melanin synthesis.

Procainamide hydrochloride is a class Ia antiarrhythmic drug that is structurally-related to procaine.

A class I anti-arrhythmic agent (one that interferes directly with the depolarization of the cardiac membrane and thus serves as a membrane-stabilizing agent) with a depressant action on the heart similar to that of guanidine.