请输入您要查询的英文单词:

 

单词 phytane
释义

phytanen.

Brit. /ˈfʌɪteɪn/, U.S. /ˈfaɪˌteɪn/
Origin: A borrowing from German. Etymon: German Phytan.
Etymology: < German Phytan (R. Willstätter & F. Hocheder 1907, in Ann. der Chem. 354 208) < ancient Greek ϕυτόν plant (see phyto- comb. form) + German -an -ane suffix2.
Chemistry.
A colourless liquid isoprenoid hydrocarbon that is the alkane corresponding to phytol and occurs in petroleum and some rocks, probably as a breakdown product of chlorophyll; 3,7,11,15-tetramethylhexadecane, C20H42.
ΘΚΠ
the world > matter > chemistry > organic chemistry > hydrocarbons > [noun] > alkanes > branched-chain
isobutane1876
isoparaffin1876
isopentane1876
phytane1907
isooctane1909
pristane1923
triptane1943
1907 Jrnl. Chem. Soc. 92 i. 784 This derivative is an ester, termed phaeophytin, and is hydrolysed readily by alkalis, yielding an unsaturated alcohol, phytol, C20H40O, which is formed also by the action of alkalis on chlorophyll. For the hypothetical saturated hydrocarbon, corresponding with this alcohol, the authors propose the name phytane.
1965 New Scientist 6 May 378/1 Certain hydrocarbons, such as the branched-chain compounds phytane and pristane, can if found [in rocks] be taken to be definite evidence of life.
1991 Sci. Amer. Oct. 89/1 The spruce trees that cover the islands are a source of terpenes, hydrocarbons similar to phytane and pristane, found in Prudhoe Bay crude.
This entry has been updated (OED Third Edition, March 2006; most recently modified version published online March 2022).
<
n.1907
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:2024/12/23 16:24:16