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Directory Results for New Inorganic Pigments from Mineral Structures by Carlo A ... to New Inosine and Guanosine Analogs as Inhibitors of Parasitic Infections.. A number of heterocycles and nucleosides in the pyraxolo3,4-dpryrimidine, pyrazolo 3,4-f-as-triazine, s-triazolo4,3-cpyridine, s-triazolo1,5-a-striazine, imidaxo4,5-cpyridine a