Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of umbelliferone is as below...

Umbelliferone :: Umbelliferone (n.) A tasteless white crystalline substance, C9H6O3, found in the bark of a certain plant (Daphne Mezereum), and also obtained by the distillation of certain gums from the Umbelliferae, as galbanum, asafetida, etc. It is analogous to coumarin. Called also hydroxy-coumarin..

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