Reagent Wagner

Wagner reagent Dissolve 1.27 g I2 (sublimed) and 2 g KI in 20 mL water, and make up with water to 100 mL. A brown precipitate in acidic solutions would suggest the presence of alkaloids. 

Wagner s solution (phosphate rock analysis) dissolve 25 g citric acid and 1 g salicylic acid in water, and make up to 1 liter. Twenty-five to fifty milliliters of this reagent prevents precipitation of iron and aluminum. 

Note Tertiary amines do not react with dansyl chloride and can be detected by spraying afterwards with Wagner s reagent [1]. The detection limits for amines are in the lower nanogram range. 

Wagner, H. P., Pepich, B. V., Hautman, D. P., and Munch, D. J., Analysis of 500 ng/1 levels of bromate in drinking water by direct-injection suppressed ion chromatography coupled with a single, pneumatically delivered postcolumn reagent, /. Chromatogr. A, 850, 119, 1999. 

Fella C, Walker GF, Ogris M, Wagner E (2008) Amine-reactive pyridylhydrazone-based PEG reagents for pH-reversible PEI polyplex shielding. Eur J Pharm Sci 34 309-320... 

Knorr V, Allmendinger L, Walker GF, Paintner FF, Wagner E (2007) An acetal-based PEGylation reagent for pH-sensitive shielding of DNA polyplexes. Bioconjug Chem 18 1218-1225... 

Wagner s reagent analychem An aqueous solution of Iodine and potassium iodide used for microchemical analysis of alkaloids. Also known as Wagner s solution. vag-narz re,a- 9nt ... 

Wagner s solution See Wagner s reagent. vag narz sa.Iu shan 1 Walden s rule phys chem A rule which states that the product of the viscosity and the equivalent ionic conductance at infinite dilution In electrolytic solutions is a constant, independent of the solvent It Is only approximately correct. wol-danz, rul ... 

Potassium permanganate is a classical reagent for such Wagner-type dihydroxylations. Initially formed vicinal diols 50 immediately eliminate hydrogen fluoride to give x-diketones 51.90... 

Fig. 3.69 60 MHz proton magnetic resonance spectra of methyl isobutyl ketone (10.6 mg, 1.1 x 10 4mol) in CC14 (0.5 ml) containing various amounts of Eu(pfd)3 A, 0.0 mg B, 13.5 mg C, 21.1 mg D, 29.0 mg. Data reproduced from H. E. Francis and W. F. Wagner (1972). Induced Chemical Shifts in Organic Molecules Intermediate Shift Reagents , Organic Magnetic Resonance, 4,190 (Fig. 1), Heyden and Son Ltd.

While several reviews collected in this volume describe the basic chemical composition of transfection reagent classes, Salcher and Wagner focus on the modification and functionalization of polymeric gene carriers to improve their transfection efficiencies for DNA or siRNA. Such modifications include the introduction of cell-specific ligands or pH-sensitive lytic residues. 

W. F. Hoelderich, H. H. Wagner, M. H. Valkenberg, 4th Int. Symp. on Supported Reagents (St Andrews), Immobilised catalysts and their use in the synthesis of fine and intermediate chemicals, 2000. 

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