110924-90-8 3-Methoxy-1-((7-oxo-8-phenyl-7H-pyrido(1,2-b)thieno(2,3-d)pyridazin-10-yl)carbonyl)azetidine Azetidine, 3-methoxy-1-((7-oxo-8-phenyl-7H-pyrido(1,2-b)thieno(2,3-d)pyridazin-10-yl)carbonyl)-