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.
(=7-hydroxy coumarin)伞形酮, 7-羟基香豆素