orcin

A peculiar coloring matter, represented by the formula C7H6(OH2), obtained from the orchella-weed and other lichens.

A colorless crystalline substance, C6H3.CH3.(OH)2, which is obtained from certain lichens (Roccella, Lecanora, etc.), also from extract of aloes, and artificially from certain derivatives of toluene. It changes readily into orcein.

The organic compound 3,5-dihydroxytoluene, found in many lichens and synthesizable from toluene.