Showing 1-10 of 10 results for "329576"
Fabricio A Hansel et al.
Rapid communications in mass spectrometry : RCM, 25(13), 1893-1898 (2011-06-04)
A methodology is presented for the determination of dihydroxy fatty acids preserved in the 'bound' phase of organic residues preserved in archaeological potsherds. The method comprises saponification, esterification, silica gel column chromatographic fractionation, and analysis by gas chromatography/mass spectrometry. The...
Diane M Coe et al.
Organic & biomolecular chemistry, 1(7), 1106-1111 (2003-08-21)
A convenient and efficient method for the cleavage of 1,3-oxazolidin-5-ones and 1,3-oxazolidin-2-ones utilising potassium trimethylsilanolate in tetrahydrofuran is described. The benzyloxycarbonyl-protecting group is readily removed under the reaction conditions, whereas the N-benzoyl group is stable. A synthesis of (R)-salmeterol exploiting...
E N M Ho et al.
Analytica chimica acta, 586(1-2), 208-216 (2007-03-28)
Turinabol (4-chloro-17alpha-methyl-17beta-hydroxy-1,4-androstadien-3-one) is a synthetic oral anabolic androgenic steroid. As in the case of other anabolic steroids, it is a prohibited substance in equine sports. The metabolism of turinabol in human has been reported previously; however, little is known about...
Limin He et al.
Journal of AOAC International, 88(4), 1104-1107 (2005-09-13)
Clopidol was extracted from chicken with acetonitrile, and the extract was evaporated to about 5 mL. The concentrated solution was centrifuged and applied to a glass column filled with basic alumina. The column was eluted with methanol and the methanol...
Grzegorz Piechota et al.
Bioresource technology, 103(1), 16-20 (2011-10-29)
The removal and determination of trimethylsilanol (TMSOH) in landfill gas has been studied before and after the special E3000-ITC System. The system works according to principle of temperature swing. The performance of TMSOH and humidity removal was 20% and more...
Todd A Duncombe et al.
Langmuir : the ACS journal of surfaces and colloids, 28(38), 13765-13770 (2012-09-01)
We introduce the wetting barrier ratchet, a digital microfluidic technology for directed drop transport in an open air environment. Cyclic drop footprint oscillations initiated by orthogonal vibrations as low as 37 μm in amplitude at 82 Hz are rectified into...
A Isquith et al.
Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association, 26(3), 263-266 (1988-03-01)
Six organosilicon compounds which had been found to have clastogenic activity in an in vitro battery of genotoxicity assays were evaluated in rat bone marrow cytogenetic assays for assessing clastogenicity in an in vivo system. None of the six compounds...
Igor S Ignatyev et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 60(5), 1169-1178 (2004-04-16)
The assignment of the SiOH group vibrations of trimethylsilanol, which is still controversial, is proposed. This assignment is based on theoretical B3LYP force field scaled using the constants of the (CH3)3Si group optimized to fit experimental vibrational frequencies of (CH3)3SiF...
Brinda Prasad et al.
Analytical chemistry, 83(1), 231-239 (2010-12-07)
A low-abundance form of water, H(2)(17)O, was enriched from 0.04% to ∼90% by slow evaporation and fractional distillation of tap water. The density and refractive index for H(2)(17)O are reported. Gas chromatography-mass spectrometry (GC-MS) of (16)O- and (17)O-1-hexanols and their...
D M Hui et al.
Clinica chimica acta; international journal of clinical chemistry, 302(1-2), 171-188 (2000-11-14)
We developed a new assay method for fluoride anion (F(-)) a specific metabolite of sarin. Trimethyifluorosilane (TMFS) was derivatized from F(-) with trimethylsilanol, and TMFS was detected with a GC-flame ionization detector (FID) and capillary column system. The linear range...

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