| 释义 |
py·rone
\ˈpīˌrōn\ noun
(-s)
Etymology: International Scientific Vocabulary pyr- + -one
1. : either of two isomeric carbonyl compounds C5H4O2 derived from pyran:
a. : an oily liquid delta-lactone; 2H-pyran-2-one — called also alpha-pyrone, 2-pyrone; compare coumalin, coumarin
b. : a hygroscopic crystalline compound; 4H-pyran-4-one — called also gamma-pyrone, 4-pyrone; compare chromone; structural formula
2. : a derivative of either of the pyrones |