INDIGOIDS (HETEROCYCLIC HYDROCARBONS)
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BTHETERO-POLYCYCLIC HYDROCARBONS/NITROGEN AS HETEROATOM
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BTNOT CONDENSED HETERO-POLYCYCLIC HYDROCARBONS
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UDC547.89,9*1*1*2*3*2
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Descriptor GERINDIGOIDE (HETEROCYCLISCHE KOHLENWASSERSTOFFE)
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Descriptor ENGINDIGOIDS (HETEROCYCLIC HYDROCARBONS)
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Descriptor FREINDIGOÏDES (HYDROCARBURES HÉTÉROCYCLIQUES)
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Variant GERINDIGO UND DERIVATE (HETEROCYCLISCHE KOHLENWASSERSTOFFE)
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Variant ENGINDIGO AND DERIVATIVES (HETEROCYCLIC HYDROCARBONS)
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Variant FREINDIGO ET DÉRIVÉS (HYDROCARBURES HÉTÉROCYCLIQUES)
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RTINDIGOID DYES (COLOUR INDUSTRIES)