Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1995-05-31
1996-05-14
Haley, Jacqueline
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
424DIG1, 8649, 81276, A61K 713, C07D20912
Patent
active
055169163
ABSTRACT:
A process for preparing dye compositions which comprises hydrolyzing an O-protected 5,6-dihydroxyindole with an alkaline material under anaerobic condition and the products made by such process.
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Brown Keith C.
Meyer Alice A.
Murphy Bryan P.
Schultz Thomas M.
Clairol Incorporated
Haley Jacqueline
Zeller Charles J.
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