The components include orcinol, hydrochloric acid, and ferric chloride.
2.
Orcinol, a natural phenolic organic compound, occurs in many species of lichens including " R . tinctoria ".
3.
A pentose, if present, will be dehydrated to form furfural which then reacts with the orcinol to generate a colored substance.
4.
They often contain ?-orcinol depsidones ( secondary metabolites of lichens ) such as norstictic acid and stictic acids; others have fatty acids or triterpenes.
5.
Later he made important contributions to the knowledge of dehydracetic acid, describing a number of very remarkable'condensations,'whereby it is converted into pyridine, orcinol and naphthalene derivatives.
6.
Lichen substances are of the chemotype found in most species of the subgenus : an unknown T3, the triterpene zeorin and the diterpene (-)-16 ?-hydroxykaurane, with accessory ?-orcinol depsidone, salazinic acid.
7.
Orcinol has been detected in the " toxic glue " of the ant species " Camponotus saundersi " . " Rhynchophorus ferrugineus " ( red palm weevil ) use 2-methoxy-4-vinylphenol for chemical signaling ( pheromones ).
8.
"Vermilacinia varicosa " is classified in subgenus " Vermilacinia " in which it is distinguished from related species by its thallus divided into relatively few fan-shaped branches ( less than 10 ) widely expanded above a short narrow stalk-like base and by its secondary metabolites of terpenoid compounds that generally characterize the subgenus : an unknown T3, the triterpene zeorin and the diterpene (-)-16 ?-hydroxykaurane, with an accessory ?-orcinol depsidone, salazinic acid.
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