phenoxazone
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Erythrolitmin — (also called erythrolein) is the active ingredient extracted from the Litmus lichen, used in chemistry as a pH indicator. The erythrolitmin molecule is related to the orceins, and consists essentially of several phenoxazone and orcinol residues.… … Wikipedia
Orcein — Orcein, also archil, orchil, lacmus, Citrus Red 2, and C.I. Natural Red 28, are names for dyes extracted from several species of lichen, commonly known as orchella weeds , found in various parts of the world. A major source is the archil lichen,… … Wikipedia
actinosin — A phenoxazone derivative that is the chromophore of the actinomycins … Medical dictionary
dactinomycin — Produced by several species of Streptomyces ( e.g., S. parvulus); an antineoplastic antibiotic used especially for Ewing sarcoma, rhabdomyosarcoma, and Wilms tumor in children and for trophoblastic disease … Medical dictionary
phenoxazine — Phenothiazine in which S is replaced by O; as the 3 oxo derivative (phenoxazone), p. is the chromophore of actinomycins … Medical dictionary
PIGMENTS — Les substances naturelles colorées ont très tôt suscité la curiosité et l’intérêt des hommes. Le simple fait qu’elles soient visibles a stimulé leur étude tout en facilitant les techniques de recherche. L’emploi de préparations naturelles pour… … Encyclopédie Universelle
