Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters
Patent
1976-11-12
1979-05-22
Shaver, Paul F.
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acid esters
560129, 560131, 560226, 568823, 568828, 2604488R, 2604482B, C07C 6900
Patent
active
041560906
ABSTRACT:
15,15'-Didehydro-astaxanthin and ester derivatives thereof useful as coloring agents and intermediates for astaxanthin and a method for preparing astaxanthin from keto .alpha.-isophorone and intermediates therein.
REFERENCES:
patent: 3299111 (1967-01-01), Adams et al.
patent: 3917675 (1975-11-01), Ochsner
patent: 4000198 (1976-12-01), Rosenberger
Epstein William H.
Hoffmann-La Roche Inc.
Leon Bernard S.
Saxe Jon S.
Shaver Paul F.
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