page_title: Bufagin
section_title: Chemistry
hierarchical_section_title: Bufagin / Chemistry
context_page_description: Bufagin is a toxic steroid C₂₄H₃₄O₅ obtained from toad's milk, the poisonous secretion of a skin gland on the back of the neck of a large 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.
context_section_description: Bufagin and bufagins are bufadienolide derivatives. This means they are steroids with a pyran- (delta-)lactone ring attached to ring D (the five-membered one). The difference to digitalis compounds is that the latter have a furan- (gamma-)lactone ring that has one carbon atom and one double bond less.
caption: Gamabufagin
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