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J. Heterocyclic Chem., Vol. 35, 1998. p.1421-1428
Pyridazines. XV. Synthesis of 6-Aryl-5-amino-3(2H)-pyridazinones as Potential Platelet Aggregation Inhibitors
Isabel Estevez, Enrique Ravina, Eddy Sotelo
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https://www.jhetchem.com/cd2html.php?file=19981421