THIOPYRAN AND DERIVATIVES (HETEROCYCLIC HYDROCARBONS)
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BTHETERO-MONOCYCLIC HYDROCARBONS/SULFUR MONOHETERO, 6-MEMBERED RING
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BTPYRANS AND THIOPYRANS (HETEROCYCLIC HYDROCARBONS)
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UDC547.818
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Descriptor GERTHIOPYRAN UND DERIVATE (HETEROCYCLISCHE KOHLENWASSERSTOFFE)
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Descriptor ENGTHIOPYRAN AND DERIVATIVES (HETEROCYCLIC HYDROCARBONS)
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Descriptor FRETHIOPYRANE ET DÉRIVÉS (HYDROCARBURES HÉTÉROCYCLIQUES)