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Showing 1-18 of 18 results for "13980" within Papers
L Sangeetha Vedula et al.
Archives of biochemistry and biophysics, 466(2), 260-266 (2007-08-07)
Trichodiene synthase is a terpenoid cyclase that catalyzes the cyclization of farnesyl diphosphate (FPP) to form the bicyclic sesquiterpene hydrocarbon trichodiene (89%), at least five sesquiterpene side products (11%), and inorganic pyrophosphate (PP(i)). Incubation of trichodiene synthase with 2-fluorofarnesyl diphosphate
Lena Edström et al.
Journal of chromatography. A, 1218(15), 1966-1973 (2010-10-05)
It has recently been demonstrated, using mathematical models, how peculiar overloaded band profiles of basic compounds are due to the local pH in the column when using low capacity buffers. In this study, overloaded peak shapes resulting after injection of
R Daniel Peluffo et al.
The Journal of general physiology, 123(3), 249-263 (2004-02-26)
The effects of organic quaternary amines, tetraethylammonium (TEA) chloride and benzyltriethylammonium (BTEA) chloride, on Na,K pump current were examined in rat cardiac myocytes superfused in extracellular Na(+)-free solutions and whole-cell voltage-clamped with patch electrodes containing a high Na(+)-salt solution. Extracellular
Correlation analysis in a set of X-benzyltrimethylammonium derivatives with antimuscarinic activity.
M De Amici et al.
Il Farmaco; edizione scientifica, 42(6), 409-424 (1987-06-01)
The results of a pharmacological investigation on a series of meta-substituted benzyltrimethylammonium salts possessing an antimuscarinic activity are reported. Correlative analysis shows that the pharmacodynamic activity is a function of the hydrophobic-lipophilic parameter associated with the substituent.
Peniel J Lim et al.
Electrophoresis, 32(13), 1654-1658 (2011-06-08)
A micropreparative-scale multicompartmental electrolyzer called ConFrac has been developed and tested for isoelectric trapping separations. ConFrac can be operated in pass-by-pass mode or recirculating mode, using either asymmetrical feeding (feed enters only the anodic or the cathodic flow-through compartment) or
Chad D Iverson et al.
Journal of chromatography. A, 1373, 17-24 (2014-12-04)
Most stationary phases for hydrophilic interaction liquid chromatography (HILIC) and reversed phase liquid chromatography (RPLC) are based on silica. Porous graphitic carbon (PGC) is an attractive alternative to silica-based phases due to its chemical and thermal stability, and unique selectivity.
Marek Majdan et al.
Journal of environmental management, 91(1), 195-205 (2009-09-01)
The comparison of phenol sorption on phenyltrimethylammonium (PTMA)- and benzyltrimethylammonium (BTMA)-bentonite shows a clear difference as far as phenol sorption isotherms are concerned. For PTMA-bentonite the sorption isotherm is of a straight-line character which results from simple partitioning of phenol
Yasser El-Nahhal et al.
Journal of agricultural and food chemistry, 53(5), 1620-1624 (2005-03-03)
This study aimed to evaluate new methodology for designing ecologically acceptable formulations of acetochlor. Modification of montmorillonite with phenyltrimethylammonium chloride (PTMA) or benzyltrimethylammonium chloride (BTMA) and organoclay formulations of acetochlor were prepared in the presence of high concentrations of sodium
Izabela M Barszczewska-Rybarek et al.
Acta of bioengineering and biomechanics, 17(3), 13-22 (2015-12-22)
This paper presents the pilot study aimed at the development of new full interpenetrating polymer networks based on urethane- dimethacrylate and biodegradable epoxy-polyester as the proposition of new biomaterials with gradually emerging porosity. The urethane-dimethacrylate monomer was obtained from 4,4'-methylenebis(phenyl
Weisheng Lin et al.
Analytica chimica acta, 583(1), 98-102 (2007-03-28)
The importance of benzyltriethyl ammonium chloride (BTEAC) in industrial applications has stimulated the development of a number of methods for its determination. In this paper, a high performance capillary electrophoresis (CE) method, coupled with an extraction technique for determining BTEAC
Purushothaman Gopinath et al.
The Journal of organic chemistry, 74(16), 6291-6294 (2009-07-22)
An efficient protocol is reported for the synthesis of thioesters from carboxylic acids with use of acyloxy phosphonium salts as intermediates and benzyltriethylammonium tetrathiomolybdate as the sulfur transfer reagent.
Nicola H Davies et al.
Journal of chromatography. A, 1119(1-2), 11-19 (2006-01-03)
The retention and overloading properties for eight basic solutes and two quaternary ammonium compounds were studied over the pH range 2.7-10.0 using phosphate and carbonate buffers. At low pH, a hybrid inorganic-organic silica-ODS phase (XTerra RP-18, 15 cm x 0.46
S Spiegel et al.
Zeitschrift fur Naturforschung. C, Journal of biosciences, 56(11-12), 1057-1066 (2002-02-12)
Distinct concentration ranges of selected quaternary ammonium and phosphonium salts were elaborated to induce stimulatory or inhibitory effects, respectively, on photosynthetic reactions. By means of fluorescence induction measurements 3 different effects of alkylbenzyldimethylammonium chloride (ABDAC; zephirol) in chloroplast preparations from
Akikazu Kakehi et al.
Chemical & pharmaceutical bulletin, 52(2), 279-281 (2004-02-06)
The bromination/dehydrobromination reactions of ethyl 3-[1-alkoxycarbonyl-2-(methylthio)indolizin-3-yl]acrylates were reinvestigated. Reactions of the title compounds with two equivalents of bromine, followed by heating of the resulting reaction mixture and then treatment with a base gave the unexpected dialkyl 7-bromothieno[2,3-b]indolizine-2,9-dicarboxylates, while similar reactions
J M Sanders et al.
Xenobiotica; the fate of foreign compounds in biological systems, 25(3), 303-313 (1995-03-01)
1. Benzyltrimethylammonium chloride (BTMAC)-derived radioactivity was rapidly eliminated from the F344 rat and the B6C3F1 mouse following p.o. administration of 0.63-63 mg/kg of [ring-U-14C] BTMAC. Greater than 90% of the radioactivity was excreted in urine and faeces within 24-h post-dosing.
Li Zaijun et al.
Journal of AOAC International, 90(4), 1191-1196 (2007-09-01)
The ionic liquid 1-butyl-3-trimethylsilylimidazolium hexafluorophosphate, abbreviated as [C4tmsim][PF6], was developed as a novel medium for liquid-liquid extraction of lead(II) in water, in which dithizone was used as a metal chelator to form a neutral lead-dithizone complex. Under optimal conditions, the
M Kobayashi et al.
The Journal of biological chemistry, 274(15), 10474-10480 (1999-04-03)
A partial-length human cDNA with a predicted amino acid sequence homologous to a previously described heparan sulfate iduronyl 2-sulfotransferase (Kobayashi, M., Habuchi, H., Yoneda, M., Habuchi, O., and Kimata, K. (1997) J. Biol. Chem. 272, 13980-13985) was obtained by searching
H Habuchi et al.
The Journal of biological chemistry, 273(15), 9208-9213 (1998-05-16)
Heparan-sulfate 6-sulfotransferase (HS6ST) catalyzes the transfer of sulfate from 3'-phosphoadenosine 5'-phosphosulfate to position 6 of the N-sulfoglucosamine residue of heparan sulfate. The enzyme was purified to apparent homogeneity from the serum-free culture medium of Chinese hamster ovary (CHO) cells (Habuchi
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