What is "bufagin"

n. (context organic compound English) Any of a class of toxic steroids found in bufotoxin.

Bufagin is a toxic steroid CHO obtained from toad's milk, the poisonous secretion of a skin gland on the back of the neck of a large toad ( Rhinella marina, synonym Bufo marinus, the Cane Toad). The toad produces this secretion when it is injured, scared or provoked. Bufagin resembles chemical substances from digitalis in physiological activity and chemical structure.

Bufagin also refers to any of several similar substances found as components of the mixture bufotoxin in secretions of other toads, as well as plants and mushrooms.