BENZOPYRONES (HETEROCYCLIC HYDROCARBONS)
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BTHETERO-POLYCYCLIC HYDROCARBONS/OXYGEN AS HETEROATOM
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BTCONDENSED HETERO-POLYCYCLIC HYDROCARBONS/ONLY OXYGEN AS HETEROATOM
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BTPYRONES (HETEROCYCLIC HYDROCARBONS)
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UDC547.814.1*1
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Descriptor GERBENZOPYRONE (HETEROCYCLISCHE KOHLENWASSERSTOFFE)
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Descriptor ENGBENZOPYRONES (HETEROCYCLIC HYDROCARBONS)
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Descriptor FREBENZOPYRONES (HYDROCARBURES HÉTÉROCYCLIQUES)
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Variant GERCHROMONE (HETEROCYCLISCHE KOHLENWASSERSTOFFE)
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Variant GERCUMARINE (HETEROCYCLISCHE KOHLENWASSERSTOFFE)
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Variant GERISOCUMARINE (HETEROCYCLISCHE KOHLENWASSERSTOFFE)
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Variant ENGCHROMONES (HETEROCYCLIC HYDROCARBONS)
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Variant ENGCOUMARINE (HETEROCYCLIC HYDROCARBONS)
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Variant ENGISOCOUMARINE (HETEROCYCLIC HYDROCARBONS)
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Variant FRECOUMARINE (HYDROCARBURES HÉTÉROCYCLIQUES)
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Variant FREISOCOUMARINE (HYDROCARBURES HÉTÉROCYCLIQUES)
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Variant FRECHROMONES (HYDROCARBURES HÉTÉROCYCLIQUES)
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NTFUROCOUMARINS AND DERIVATIVES (HETEROCYCLIC HYDROCARBONS)