Search Within
91719
Applied Filters:
Keyword:'91719'
Showing 1-30 of 92 results for "91719" within Papers
Bjorn J A Berendsen et al.
Analytica chimica acta, 585(1), 126-133 (2007-03-28)
Derivatisation of the avermectines ivermectin (IVM), doramectin (DOR), abamectin (ABA) and eprinomectin (EPR), and the milbemycin moxidectin (MOX) to fluorescent derivatives is commonly used for quantitative analysis at relevant levels using high performance liquid chromatography (HPLC) with fluorescence detection. Problems
Gas chromatographic and mass spectral properties of sulfonylurea N-methyl-N'-perfluoroacyl derivatives.
W E Braselton et al.
Analytical chemistry, 48(9), 1386-1394 (1976-08-01)
T. Walle
Journal of Chromatography A, 111, 133-133 (1975)
Nucleophilic addition to N-phosphinylimines by rare-earth-metal triflate/trifluoroacetic anhydride activation.
Winnie W Ong et al.
Angewandte Chemie (International ed. in English), 46(39), 7470-7472 (2007-08-28)
Sarah J Jackson et al.
Rapid communications in mass spectrometry : RCM, 22(24), 4158-4164 (2008-11-29)
Previous gas chromatography/mass spectrometry (GC/MS) methods for determining nitrate in biological samples involve either hazardous chemicals or produce multiple isomers that can be difficult to quantitate. Modification of these methods, by the nitration of mesitylene instead of benzene and in
Enrico Gerace et al.
Forensic science international, 243, 68-73 (2014-05-23)
The distribution of mephedrone in the body fluids and tissues of a subject found dead after the concomitant intake of cocaine and mephedrone is reported. Mephedrone (4-methylmethcathinone) is a designer drug of the phenethylamine family that is able to cause
Panagiota Nikolaou et al.
Journal of pharmaceutical and biomedical analysis, 102, 25-32 (2014-09-23)
A sensitive and accurate gas chromatography-mass spectrometric method was developed and validated for the simultaneous determination of levetiracetam and lamotrigine in whole blood. A solid-phase extraction (SPE) procedure using HF Bond Elut C18 columns followed by derivatization using N-methyl-N-tert-butyldimethylsilyl-trifluoroacetamide (MTBSTFA)
Ana Margarida Araújo et al.
Archives of toxicology, 89(5), 757-771 (2014-06-07)
The world's status quo on recreational drugs has dramatically changed in recent years due to the rapid emergence of new psychoactive substances (NPS), represented by new narcotic or psychotropic drugs, in pure form or in preparation, which are not controlled
M. Greer et al.
Clinica Chimica Acta; International Journal of Clinical Chemistry, 21, 247-247 (1968)
O. Gyllenhaal and H. Ehrsson
Journal of Chromatography A, 107, 327-327 (1975)
Gas-chromatographic behavior of trifluoracetoxy steroids.
W J VAN DEN HEUVEL et al.
Biochimica et biophysica acta, 48, 596-599 (1961-04-15)
Phosphonoglycan. A major polysaccharide constituent of the amoeba plasma membrane contains 2-aminoethylphosphonic acid and 1-hydroxy-2-aminoethylphosphonic acid.
E D Korn et al.
The Journal of biological chemistry, 248(6), 2257-2259 (1973-03-25)
L Giannetti et al.
Analytica chimica acta, 700(1-2), 11-15 (2011-07-12)
Avermectines are antiparasitic agents widely used as veterinary drugs for food producing animals. The European Community, due to their side effects, limited the use of these molecules establishing maximum residue limits (MRLs) in some foods. A validated qualitative and quantitative
Gang Shan et al.
Angewandte Chemie (International ed. in English), 51(52), 13070-13074 (2012-11-20)
Acid brings the oxygen: a general method for palladium-catalyzed C-H oxygenation has been developed for the facile synthesis of a wide range of functionalized phenols with readily available aryl ketones, benzoates, benzamides, acetanilides, and sulfonamides. A trifluoroacetic acid/trifluoroacetic acid anhydride
Ying Lung Tseng et al.
Journal of analytical toxicology, 30(6), 365-369 (2006-07-29)
Heptaminol is an antihypotensive drug and is one of the stimulants banned in sport competitions. When heptaminol was fortified to a drug-free urine sample and subjected to solid-phase extraction, trifluroacetic anhydride derivatization, and gas chromatography-mass spectrometry analysis, the results indicated
Duckhee Lee et al.
Molecules (Basel, Switzerland), 17(2), 2231-2239 (2012-02-24)
Direct benzoylation of the two hydroxyl groups on chitosan was achieved using a phosphoryl mixed anhydride system, derived from trifluoroacetic anhydride (TFAA), benzoic acids (BAs), and phosphoric acid (PA). The reaction is operated as a one pot process under mild
Determination of phenformin in biological fluids using chemical ionization mass spectrometry.
S B Matin et al.
Biomedical mass spectrometry, 1(5), 320-322 (1974-10-01)
F. Deckert
Journal of Chromatography A, 69, 201-201 (1972)
H Christine Lo et al.
Journal of the American Chemical Society, 129(5), 1246-1253 (2007-02-01)
Re(2)O(7), which is known primarily as a strong oxidant, was found to be a highly selective Lewis acid catalyst that affects the heteroacylative dimerization of THF at room temperature. This multicomponent reaction, which involves THF, trifluoroacetic anhydride (TFAA), and a
Thomas-Xavier Métro et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 15(5), 1064-1070 (2008-12-17)
Beta-amino alcohols derived from alpha-amino acids have been extensively used as a powerful source of chirality. Transforming the alcohol moiety into a good leaving group has allowed the rearrangement of these beta-amino alcohols and the introduction of a large number
Gas chromatographic separation of some iodine compounds of serum.
A H Richards et al.
Analytical chemistry, 38(12), 1751-1752 (1966-11-01)
D.A. Saelens et al.
Journal of Chromatography A, 123, 185-185 (1976)
B.L. Brian et al.
Journal of Chromatography A, 63, 386-386 (1971)
Stereoselective synthesis of 2,4,6-trisubstituted tetrahydropyrans by the use of cyclopropanols as homoenols.
Hyung Goo Lee et al.
Angewandte Chemie (International ed. in English), 46(18), 3326-3328 (2007-03-28)
Giuseppe Zanoni et al.
The Journal of organic chemistry, 75(23), 8311-8314 (2010-11-11)
Endogenous nitro-fatty acids, acting as partial agonist of PPARγ, are able to lower the insulin and glucose levels without the side effects associated with common antidiabetic drugs. (E)-12-Nitrooctadec-12-enoic acid, a potent activator of this peroxisome receptor, was synthesized in a
Mass fragmentography of creatinine proposed as a reference method.
I Björkhem et al.
Clinical chemistry, 23(11), 2114-2121 (1977-11-01)
C. Zomzely et al.
Analytical Chemistry, 34, 1414-1414 (1962)
Lok Ranjan Bhatt et al.
Carbohydrate research, 346(5), 691-694 (2011-03-01)
Acylation of chitin with butyric acid was performed in the presence of trifluoroacetic anhydride/phosphoric acid mediated system. The products were characterized by (1)H NMR and FT-IR spectroscopy and their solubility was tested in different organic solvents. Inclusion of butyric acid
QUANTITATIVE GAS CHROMATOGRAPHY OF AMINO ACIDS. PREPARATION OF N-BUTYL N-TRIFLUOROACETYL ESTERS.
W M LAMKIN et al.
Analytical chemistry, 37, 383-389 (1965-03-01)
W.J. Irvine and M.J. Saxby
Journal of Chromatography A, 43, 129-129 (1969)
Page 1 of 4