In the crystal structure of the title organic salt, C(3)H(10)NO(+)·IO(4) (-)·C(12)H(24)O(6), the protonated 2-meth-oxy-ethanaminium (CH(3)OC(2)H(4)-NH(3) (+)) cation forms a 1:1 supra-molecular rotator-stator complex with the 18-crown-6 mol-ecule via N-H⋯O hydrogen bonds. The (CH(3)OC(2)H(4)-NH(3) (+)) group is attached from the convex side of the bowl-shaped crown, in contrast to similar ammon...

Ranhand, Jon M. (University of Cincinnati, Cincinnati, Ohio), and Herman C. Lichstein. Periodate inhibition of transformation and competence development in Haemophilus influenzae. J. Bacteriol. 92:956-959. 1966.-Periodate treatment of competent cells reduced the frequency of transformation to streptomycin resistance about 90% while reducing cell viability about 30% or less. Moreover, when perio...

1 The structures of sialo-oligosaccharide alditols as determined by H-NMR spectrometry together with methylation analysis did not correspond with those derived previously from quantitative periodate oxidation data alone. Possible causes of the discrepancy were explored in the periodate oxidation methodology. No free sialic acid was released by the acidity of the periodate in the course of oxida...

Periodate oxidation is one of the most important reaction in structural study of non-ionic polysaccharide. Periodate oxidation was done using sodium metaperiodate as oxidant proposed by Fluery & Lange’s method. It consumed 1.16 moles of periodate and liberated 0.23 moles of formic acid per mole of anhydrohexose unit after 50 hrs. The isolated water soluble seeds extract yielded sugars as D-gala...

effects of imidazoles and substituted pyridines and pure s-donors on the oxidation of cyclooctene with naio4 by 5,10,15,20-tetraphenylporphyrinato-manganese(iii) acetate, mn(tpp)oac, and 5,10,15,20-tetramesitylporphyrinato-manganese(iii) acetate, mn(tmp)oac, catalysts in ch2cl2-h2o solvent are studied. coordination of the nitrogen donors to the mn-catalysts generally caused a reduction in the e...

A new periodate-based reactive assay system enables the rapid evaluation of cis-dihydroxylation activity Rieske dioxygenase enzymes.

In studies of manganese deficiency in the rabbit,1 a method for the determination of this element in small samples of blood serum and other tissues was needed. The most promising of the organic reagents suitable for manganese appeared to be 4,4’-tetramethyldiaminodiphenylmethane, which has been used by Harry (1) in a calorimetric procedure and by Mellan (2) as a spot test reagent. Preliminary t...

UDP-GlcNAc (UDP-N-acetylglucosamine) and UDP-GlcA (UDP-glucuronic acid) were oxidized by periodate in the ribose ring and utilized as inhibitors for hyaluronate synthase in membrane fractions from the B6 cell line and in cell cultures of B6 cells and human fibrosarcoma HT 1080. Inhibition was irreversible and concentration-dependent and could be prevented in the case of periodate-oxidized UDP-G...

A rapid, simple, precise and accurate method is proposed for the determination of ternary mixtures of periodate-iodate-bromate based on their reaction with iodide ion at different pH values. The absorbance was measured at 352 nm. Three sets of reaction conditions were developed. In the first set of conditions, only periodate reacted with iodide, but in the second set the periodate and iodate re...