Cell-permeable. A potent and specific protein arginine N-methyltransferase (PRMTs) inhibitor (IC₅₀ = 8.8 μM for human PRMT1 and 3.0 μM for yeast Hmt1p ). Does not compete for the AdoMet (S-adenosyl-L-methionine; SAM) binding site. Also acts as a HIV-1 RT polymerase inhibitor (IC₅₀ = 5.0 μM).