n. 香豆素, 氧杂萘邻酮
[化] 香豆素1,2-氧萘酮
n. The concrete essence of the tonka bean, the fruit of
Dipterix (formerly Coumarouna) odorata and consisting essentially of
coumarin proper, which is a white crystalline substance, C9H6O2, of
vanilla-like odor, regarded as an anhydride of coumaric acid, and used
in flavoring. Coumarin in also made artificially.
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