Description_x000D_ Application_x000D_ Reactant for synthesis of:_x000D_ • Spiro-piperidine inhibitors for modulation of the M2 proton channel from influenza A virus_x000D_ • Second-generation selective inhibitors of Hepatitis C virus NS3 serine protease_x000D_ • Spirocyclic oxetanes_x000D_ • Ru-catalyzed stereoselective addition of imides to alkynes_x000D_ • Metabolically protected arylpiperiazine 5-HT1A ligands_x000D_ • Selective antagonists of the a1d adrenergic receptor_x000D_ Packaging_x000D_ 25 g in glass bottle