911110-98-0

Upstream product

• 1147550-11-5 ammonium thiocyanate 
• 850075-66-0 3-amino-2-methyl-3,4-dihydro-4-oxo-8,9-diphenylpyrimido[4',5':4,5]thieno[2,3-c]pyridazine 
• 128462-42-0 ethyl 5-amino-3,4-diphenylthieno[2,3-c]pyridazine-6-carbohydrazide 
• 872057-83-5 2-methyl-8,9-diphenyl-4H-pyridazino[4',3':4,5]thieno[3,2-d]-1,3-oxazin-4-one 

Relevant academic research and scientific papers

Pyridazine derivatives and related compounds, part 21: Synthesis of different heterocycles from 2-methyl-4H-pyridazino[4′,3′:4,5] thieno[3,2-d]-1,3-oxazin-4-one

Starting with ethyl 5-amino-3,4-diphenylthieno[2,3-c]pyridazine-6-carboxyl- ate, the syntheses of 2-methyl-8,9-diphenyl-4H-pyridazino[4′,3′:4,5] thieno[3,2-d]-1,3-oxazin-4-one (1), 7-amino-6-methyl-8-oxo-3,4-diphenyl-7,8- dihydropyrimido-[4′,5′:4,5]thieno