Tenofovir-C3-O-C12-trimethylsilylacetylene (ammonium) exhibits substantially longer t1/2 values than tenofovir in human liver microsomes, potent anti-HIV activity in vitro , and enhances pharmacokinetic properties in vivo. Tenofovir-C3-O-C12-trimethylsilylacetylene (ammonium) is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.