ICI-118551 is a highly selective β2-adrenergic receptor antagonist with Ki values of 0.7, 49.5 and 611 nM for β2, β1 and β3 receptors, respectively.

5-TAMRA-SE is an amine-reactive fluorescent agent, its conjugates yield bright, pH-insensitive orange-red fluorescence (approximate excitation/emission maxima ~546/579) with good photostability.

234-Trihydroxybenzoic acid is natural compoundwith antioxidant activity.