%0 Conference Proceedings %T Synthesis of new derivatives of pyrimido[4,5-c] pyridazine %A Hazrathoseyni, Ayla %A Rahimizadeh, Mohammad %A Seyedi, Seyed Mohammad %A Eshghi, Hossein %A Shiri, Ali %J 20th Iranian Seminar of Organic Chemistry %D 2013