Divaricatic acid is a chemical compound with the molecular formula C21H24O7.

It is found in a variety of lichens, including some in the genera Evernia,[1] and Lepraria,[2] and Ramalina.

Divaricatic acid forms colorless crystalline needles with a melting point of 129 °C.

[4] Divaricatic acid has antibacterial properties against some Gram positive bacteria, such as Bacillus subtilis, Staphylococcus epidermidis, Streptococcus mutans, and Enterococcus faecium.

[5] It also has molluscicidal activity against Biomphalaria glabrata (ram's horn snail) and antiparasitic activity against cercariae of Schistosoma mansoni (blood fluke).