Originally: a hydrocarbon radical C4H5 or C4H10, supposedly present in ether (now historical). Later: an alkyl group —C2H5, which occurs in ethanol…
| 单词 | θ69422 |
| 释义 | the world > matter > chemistry > organic chemistry > hydrocarbons > [noun] > hydrocarbon radicals > named, by number of carbon atoms > four (4) ethyl1834 Originally: a hydrocarbon radical C4H5 or C4H10, supposedly present in ether (now historical). Later: an alkyl group —C2H5, which occurs in ethanol… valyl1850 = butyl, n. iso-butyl1866 (see butyl, n.). butenyl1874 Each of three isomeric radicals or groups derived from butene and having the general formula —C4H7. Chiefly attributive or as a formative element in… |
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