HYPERICIN AND DERIVATIVES (COLOUR INDUSTRIES)
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BTVEGETABLE DYES (COLOUR INDUSTRY)
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UDC667.272/.276*1
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Descriptor GERHYPERICIN UND DERIVATE (FARBENINDUSTRIE)
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Descriptor ENGHYPERICIN AND DERIVATIVES (COLOUR INDUSTRIES)
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Descriptor FREHYPÉRICINE ET DÉRIVÉS (INDUSTRIE DES COLORANTS)