CYCLOBUTENEDIONE AND DERIVATIVES (ALICYCLIC HYDROCARBONS)
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BTCYCLOBUTENE AND DERIVATIVES (ALICYCLIC HYDROCARBONS)
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BTDIKETONES (POLYCARBONYLS)
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BTISO-CYCLIC KETONES (ORGANIC CHEMISTRY)
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UDC547.51,122.2
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Descriptor GERCYCLOBUTENDION UND DERIVATE (ALICYCLISCHE KOHLENWASSERSTOFFE)
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Descriptor ENGCYCLOBUTENEDIONE AND DERIVATIVES (ALICYCLIC HYDROCARBONS)
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Descriptor FRECYCLOBUTÈNEDIONE ET DÉRIVÉS (HYDROCARBURES ALICYCLIQUES)
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NTSQUARIC ACID + SEMISQUARIC ACID (ALICYCLIC HYDROCARBONS)