FUROCOUMARINS AND DERIVATIVES (HETEROCYCLIC HYDROCARBONS)
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BTBENZOPYRONES (HETEROCYCLIC HYDROCARBONS)
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BTHETERO-TRICYCLIC HYDROCARBONS/OXYGEN DIHETERO
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BTCONDENSED HETERO-POLYCYCLIC HYDROCARBONS/ONLY OXYGEN AS HETEROATOM
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UDC547.89,9*1*0*2*2*2
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Descriptor GERFUROCUMARINE UND DERIVATE (HETEROCYCLISCHE KOHLENWASSERSTOFFE)
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Descriptor ENGFUROCOUMARINS AND DERIVATIVES (HETEROCYCLIC HYDROCARBONS)
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Descriptor FREFUROCOUMARINES ET DÉRIVÉS (HYDROCARBURES HÉTÉROCYCLIQUES)
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Variant GERCUMARINE/FUROCUMARINE UND DERIVATE (HETEROCYCLISCHE KOHLENWASSERSTOFFE)
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Variant ENGCOUMARINES/FUROCOUMARINS AND DERIVATIVES (HETEROCYCLIC HYDROCARBONS)
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Variant FRECOUMARINES/FUROCOUMARINES ET DÉRIVÉS (HYDROCARBURES HÉTÉROCYCLIQUES)