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C07D498/00—Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and oxygen atoms as the only ring hetero atoms
C07D498/02—Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and oxygen atoms as the only ring hetero atoms in which the condensed system contains two hetero rings
C07D498/08—Bridged systems
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Chemical & Material Sciences
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Organic Chemistry
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Pharmaceuticals Containing Other Organic And Inorganic Compounds
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Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems
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Transition And Organic Metals Composition Catalysts For Addition Polymerization
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