PIPERAZINE AND DERIVATIVES (HETEROCYCLIC HYDROCARBONS)
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BTPYRAZINE AND DERIVATIVES (HETEROCYCLIC HYDROCARBONS)
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UDC547.861.3*1
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Descriptor GERPIPERAZIN UND DERIVATE (HETEROCYCLISCHE KOHLENWASSERSTOFFE)
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Descriptor ENGPIPERAZINE AND DERIVATIVES (HETEROCYCLIC HYDROCARBONS)
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Descriptor FREPIPÉRAZINE ET DÉRIVÉS (HYDROCARBURES HÉTÉROCYCLIQUES)
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NTKETOPIPERAZINES + HYDROXYPIPERAZINES (HETEROCYCLIC HYDROCARBONS)