a fragrant crystalline substance, C9H6O2, obtained from the tonka bean, sweet clover, and certain other plants or prepared synthetically, used chiefly in soaps and perfumery.
更多coumarin例句
If coumarin is present, a brown, precipitate will form, and if stirred with a rod it will collect in dark green flecks.
Good hay should come out green and with the odour of coumarin—to which is due the scent of new-mown hay.
We may here include various coumarin and benzo-γ-pyrone derivatives.
Coumarin, an extract from tonka beans, may be used in making the extract.
Coumarin, a white crystalline product found in Tonka beans, and prepared synthetically from salicylic acid.