DMA-135 hydrochloride inhibits enterovirus 71 (EV71) IRES-dependent translation and replication. DMA-135 hydrochloride binds to enterovirus 71 (EV71) SLII domain with moderately high affinity (K D = 520 nM). DMA-135 hydrochloride has no significant toxicity in cell-based studies. DMA-135 (hydrochloride) is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.