To address the problem of delivering highly charged small molecules, such as phytic acid (InsP6 or IHP), across biological membranes, we investigated an approach based on a non- covalent interaction between transport molecule (s) and IHP. Thus, we synthesized a collection of compounds containing IHP ionically bound to lipophilic (but non-lipidic) ammonium or poly-ammonium cations. First, we assessed the ability of these water- ...