About POPLAVSKIJ V S
About OSTROVSKIJ V A
About KOLDOBSKIJ G I
About KULIKOVA E A
About Khimiya Geterotsiklicheskikh Soedinenij
About acidity(degree)
About tetrazoles
About Other 5-membered rings with two or more hetero atoms
About Acid-base equilibrium
About テトラゾール類
About テトラゾール
About 酢酸
About 酸性度