Um`bel*lif"er*one(?), n. (Chem.) 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 Umbellifer, as galbanum, asafetida, etc. It is analogous to coumarin. Called also hydroxy-coumarin. Its strong fluorescence under ultraviolet light makes it useful in analytical biochemistry, as, for exmple, to detect phosphatase activity by hydrolysis of umbelliferyl phosphate.
[1913 Webster +PJC]
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Wed 23rd June 2021