Noun
safrole (countable and uncountable, plural safroles)
(organic chemistry) A colourless to yellow liquid, a component of sassafras oil and brown camphor oil, with pesticidal properties.
Another method uses the Wacker process to oxidize safrole directly to the MDP2P intermediate with a palladium catalyst. Source: Internet
For example, safrole was used to flavor root beer until it was shown to be carcinogenic. Source: Internet
While sassafras is no longer used in commercially produced root beer and is sometimes substituted with artificial flavors, natural extracts with the safrole distilled and removed are available. Source: Internet