(-)-Dihydroalprenolol

(-)-Dihydroalprenolol (L-Dihydroalprenolol) is a β-adrenergic antagonist that inhibits the activity of β-adrenergic receptors. (-)-Dihydroalprenolol can cause desensitization of approximately 60% of β-adrenergic receptor binding sites. (-)-Dihydroalprenolol has also been shown to reduce the binding capacity of specific β-adrenergic ligands. (-)-Dihydroalprenolol may affect the ability to stimulate membrane-bound adenylate acylase ^[1].

References:
[1]. Desensitization of beta-adrenergic receptors by beta-adrenergic agonists in a cell-free system: resensitization by guanosine 5'-(beta, gamma-imino)triphosphate and other purine nucleotides