Indole derivatives for dyeing keratin materials

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

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C07D20908

Patent

active

053548701

ABSTRACT:
The invention concerns 4-hydroxy-5-methoxyindole and 5-ethoxy-4-hydroxy-2-methylindole which are useful as dyes for dyeing keratin materials.

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patent: 4888027 (1989-12-01), Grollier et al.
patent: 4932977 (1990-06-01), Schultz

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