2-Chloroadenosine (CADO) is a metabolically stable analog of adenosine that binds to adenosine A1, A2A, and A3 receptors with Ki values of 300, 80, and 1,900 nM, respectively. CADO has been used to activate adenosine receptors in the thalamus, generating anticonvulsive activity in a rat model of generalized seizures. It has also been used to induce bronchoconstrictor effects in a guinea pig model of asthma and to study cardiovascular responses in normotensive and hypertensive rats.
