About SEDOV YU A
About Khimiya Geterotsiklicheskikh Soedinenij
About chemical synthesis
About benzimidazoles
About Imidazoles
About Pyrazines
About Aromatic monocyclic hydroxylamines,hydrazines and other compounds
About Other 5-membered rings with two or more hetero atoms
About Oxidation,reduction
About 酸化セレン
About 酸化