Benzofuran-2-one

Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

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C549S303000, C549S304000, C549S307000, C549S308000, C549S309000, C549S310000, C548S454000, C548S472000

Reexamination Certificate

active

06872839

ABSTRACT:
Benzofuran-2-ones, compositions comprising benzofuranones, processes for preparing them, and their use as colorants for high or low molecular mass organic material.

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