| slovo | definícia |
C10H14
(gcide) | eucalyptol \eu`ca*lyp*tol\, n. [eucalyptus + L. oleum oil.]
(Chem.)
A volatile, terpenelike oil (C10H18O), which is the main
constituent of the oil of eucalyptus. It has cockroach
repellent activity and is used as a flavoring aid in
pharmaceuticals. Chemically it is
1,3,3-trimethyl-2-oxabicyclo-[2,2,2]-octane. --MI11
Syn: cineole, cajeputol. [1913 Webster +PJC]
Note: In the 1913 Webster eucalytpol was defined as an oil
"consisting largely of cymene". Cymene
(isopropyltoluene, C10H14) differs from that of the
substance currently called eucalyptol, in having an
unsaturated ring and no oxygen. Para-cymene does occur
in eucalyptus oil as well as some other essential oils.
[PJC] |
| | podobné slovo | definícia |
C10H14N2
(gcide) | Nicotine \Nic"o*tine\ (? or ?), n. [F. nicotine. See
Nicotian.] (Chem.)
An alkaloid which is the active principle of tobacco
(C10H14N2). It occurs in tobacco plants ({Nicotiana
tabacum} and Nicotiana rusticum) to the extent of 2 to 8%,
in combination with malic acid or citric acid. It is a
colorless, transparent, oily liquid, having an acrid odor,
and an acrid burning taste. It is intensely poisonous. The
apparently addictive effects of tobacco smoking have been
ascribed largely to the effect of nicotine, and the
controlled administration of nicotine on various forms has
been used as a technique for assisting efforts to stop the
smoking habit. --Ure.
[1913 Webster +PJC]Isonicotine \I`so*nic"o*tine\, n. [Iso- + nicotine.] (Chem.)
A crystalline, nitrogenous base, C10H14N2, isomeric with
nicotine.
[1913 Webster] |
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