1H-imidazo[2,3-a]indol-2-ones as color-forming agents

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

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546166, 548302, C07D48704

Patent

active

048087190

ABSTRACT:
Compounds of the general formula ##STR1## wherein R represents hydrogen or alkyl and

REFERENCES:
patent: 3565902 (1971-02-01), Wright
patent: 4717414 (1988-01-01), Hunt

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