has role is protonated form of alendronic acid CHEBI:2567 A 1,1-bis(phosphonic acid) that is methanebis(phosphonic acid) in which the two methylene hydrogens are replaced by hydroxy and 3-aminopropyl groups. antibacterial agent antineoplastic agent EC 2.5.1.1 (dimethylallyltranstransferase) inhibitor bone density conservation agent alendronate(1-) primary amino compound anti-HIV agent anti-HBV agent anti-asthmatic agent 1,1-bis(phosphonic acid)