ericinol

from The Century Dictionary.

• noun A colorless, volatile, oily compound, C₂₀H₂₆O, prepared by the action of dilute acids on ericolin. It turns brown in the air.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Chem.) A colorless oil (quickly becoming brown), with a pleasant odor, obtained by the decomposition of ericolin.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun organic chemistry A colourless oil (quickly becoming brown) with a pleasant odour, obtained by the decomposition of ericolin.