2-Chloroadenosine is used as a selective A1-adenosine receptor agonist, and also Induces apoptosis.
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Haslam, R.J.; Lynham, J.A. Activation and inhibition of blood platelet adenylate cyclase by adenosine or by 2-chloroadenosine. Life Sciences. 1972, 11, (23), 1143-1154.