tetracosane


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tetracosane

[¦te·trə′kō‚sān]
(organic chemistry)
C24H50 Combustible crystals insoluble in water, soluble in alcohol, melts at 52°C; used as a chemical intermediate.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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Methanol, n-hexane, dichloromethane, trimethylchlorosilane, hexamethyldisilazane, 1-decanol, sodium sulphate anhydrous, sodium carbonate, deuterated chloroform, and tetracosane were from Sigma-Aldrich (Saint Louis, MO, USA), and hydrochloric acid and potassium hydroxide pellets were from Carlo Erba (Milan, Italy).
The derivatized samples were diluted with 600 [micro]L of a tetracosane solution in hexane (0.01 mg/mL) just before GC-MS analysis.
Due to the high boiling point of [C.sub.24][H.sub.50] (tetracosane) at 391[degrees]C, there was no gaseous standard available for the program.
Aliphatic unbranched and branched long chain hydrocarbons from dodecane to tetracosane form the last important compound group.
Among them the liquid alkanes (undecane dodecane tridecane tetradecane pentadecane hexadecane heptadecane etc.) are widely used in fuel oils and as anti-corrosive agents in lubricating oils and solid alkanes (octadecane nonadecane eicosane heneicosane tricosane tetracosane heptacosane octacosane etc.) find their use in paraffin waxes of different kinds.
Sterol quantification was performed using tetracosane (Sigma Aldrich) as the internal injection standard.
Patriscabratine and tetracosane, isolated from the Bangladesh mangrove fern, Acrostichum aureum, reportedly showed moderately cytotoxic activity against AGS, MDA-MB-231 and MCF-7 cells, and AGS, MDA-MB-231, HT-29, and NIH 3T3 cells, respectively [88].
4) (Table 4): 1) Heneicosane (C21), 2) Linoleic acid (possible contaminat), 3) Docosane (C22), 4) Tricosane (C23), 5) Tetracosane (C24), 6) Pentacosane (C25), C) phthalate 7) Hexacosane (C26), 8) Heptacosane (C27), 9) Octacosane (C28), 10) Nonacosane (C29), 11) Triacontane (C30) and 12) Hentriacontane (C31) and Dotriacontane (C32).
0.04 2301.6 diisooctyl ester Tetracosane 0.05 2359.7 Octacosane 0.34 2459.3 Heptacosane 0.11 nd Squalene 0.16 nd nd Squalene 0.16 nd nd, not determined; retention time of compounds superior to the retention time of the last FAME.