About ZVEZDINA EH A
About ZHDANOVA M P
About ANISIMOVA O S
About NECHAYUK I I
About Khimiya Geterotsiklicheskikh Soedinenij
About chemical synthesis
About benzenes
About Six-membered heterocyclic compounds in general
About Aliphatic ureas,carbamic acids,guanidines
About Cyclization reaction,ring-opening reaction
About 環状体
About カチオン類
About 求核試薬
About 過塩素酸塩
About セミカルバジド
About チオセミカルバジド