4IA0:
reference: Exploration of the 5-bromopyrimidin-4(3H)-ones as potent inhibitors of PDE5., Gong X, Wang G, Ren J, Liu Z, Wang Z, Chen T, Yang X, Jiang X, Shen J, Jiang H, Aisa HA, Xu Y, Li J, Bioorg Med Chem Lett. 2013 Sep 1;23(17):4944-7. doi: 10.1016/j.bmcl.2013.06.062. , Epub 2013 Jun 29. PMID: 23867165

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