At equivalent molar concentrations, both the salt and free forms of a compound exhibit comparable biological activity. Nevertheless, the salt form (Fosfructose trisodium) usually boasts enhanced water solubility and stability.

[Ala1,3,11,15]-Endothelin (TFA) is a highly selective for endothelin A (ETA) and endothelin B (ETB) receptor.[Ala1,?3,?11,?15]?-?Endothelin is a selective ETB endothelin receptor agonist (IC50 values are 0.33 and 2200 nM for displacing [125I]-ET-1 from ETB and ETA receptors respectively).

4-methylnonan-5-ol is a pheromone of red palm weevils and can be used to capture red palm weevils and reduce their harm to agriculture.