请输入您要查询的英文单词:

 

单词 pulegone
释义

pulegonen.

Brit. /ˈpjuːlᵻɡəʊn/, U.S. /ˈpjuləˌɡoʊn/
Origin: A borrowing from German. Etymon: German Pulegon.
Etymology: < German Pulegon (E. Beckmann & M. Pleissner 1891, in Ann. der Chem. 262 5) < puleg- (in scientific Latin pulegium : see pulege n.) + German -on -one suffix.
Chemistry.
A liquid terpenoid ketone with an odour of peppermint, present in pennyroyal ( Mentha pulegium) and some related plants.Systematic name: 1-methyl-4-isopropylidene-3-cyclohexanone; C10H16O.
ΚΠ
1891 Jrnl. Chem. Soc. 60 936 A compound of the composition C10H16O, named by the author pulegone, can be isolated from the portion boiling at 212–216°.
1922 J. J. Sudborough Bernthsen's Text-bk. Org. Chem. (new ed.) xli. 614 An unsaturated ketone—pulegone, Δ-4 (8)-terpene-3-one, may be obtained from oil of pennyroyal.
1944 P. Rothemund in O. Glasser Med. Physics 175 Some natural terpenes, citronellal, linalool, pulegone and terpineol, take up more than 1 mole of oxygen per mole when exposed to light in the presence of chlorophyll.
1996 D. W. Brown Aromatherapy (Teach Yourself Ser.) iii. 21 If large amounts are applied repeatedly, then the resulting effect could be abortion or an epileptic fit (e.g. pulegone in pennyroyal and thujone in mugwort).
This is a new entry (OED Third Edition, September 2007; most recently modified version published online March 2022).
<
n.1891
随便看

 

英语词典包含1132095条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。

 

Copyright © 2004-2022 Newdu.com All Rights Reserved
更新时间:2025/1/31 11:22:15