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pi•per•o•nal



Pronunciation: (pi-per'u-nal", pī-, pip'ur-u-), [key]
n. Chem.
a white, crystalline, water-insoluble aldehyde, C8H6O3, which darkens on exposure to light: used chiefly in perfumery and organic synthesis. Also called piper'onyl al'dehyde, heliotropin.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

piperinepiperonyl butoxide

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