Packaging 25 g in glass bottle Application Reactant for synthesis of: • Spiro-piperidine inhibitors for modulation of the M2 proton channel from influenza A virus1 • Second-generation selective inhibitors of Hepatitis C virus NS3 serine protease2 • Spirocyclic oxetanes3 • Ru-catalyzed stereoselective addition of imides to alkynes4 • Metabolically protected arylpiperiazine 5-HT1A ligands5 • Selective antagonists of the a1d adrenergic receptor6