Tags: Chemical Compound, Chemical Substance.

Usnic acid is a naturally occurring dibenzofuran derivative found in several lichen species. It was first isolated by German scientist W. Knop in 1844 and first synthesized between 1933-1937 by Curd and Robertson. Usnic acid was identified in many genera of lichens including Usnea Cladonia Lecanora Ramalina Evernia Parmelia and Alectoria.

Usnic_acid.svg
IUPAC name
-dibenzofurandione, 26-Diacetyl-79-dihydroxy-89b-dimethyl-13(2H9bh)

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