Knowledge of the structure of carcinoembryonic antigen (CEA) is essential if we are to understand the relationship of this molecule to similar, possibly cross-reacting, molecules present in nonmalignant states. Electron microscopy shows that at neutral pH, CEA particles consist of homogeneous, morphologically distinctive, twisted rod-shaped particles, about 9 X 40 nm. The carbohydrate structure...

Abstract This work represents a new method that uses electrochemically generated periodate to oxidize side‐stream lignins. Using periodate, lignin‐derived product other than vanillin becomes accessible. The development of an eco‐friendly for generating 5‐iodovanillin from lignin is reported and significant interest the wood‐based industry. Wider utilization can substitute fossil‐based chemicals...

Several lines of evidence indicate that mammalian fertilization is initiated via a binding process that is dependent upon the recognition of oligosaccharide sequences associated with zona pellucida (ZP) glycoproteins. Here, specific chemical and enzymatic methods were employed to modify human ZP and to test their effects on sperm binding in the hemizona assay system (HZA). Periodate oxidation o...

The hydrate tetrabutylammonium hydroxide ionic liquid is an efficient ILP for the controlled fabrication of zinc oxide particles with unusual nanostructures.

Aldehyde groups enable facile conjugation to proteins, enzymes, oligonucleotides or fluorescent dyes, yet there are no literature examples of water-soluble aldehyde-functional vinyl monomers. We report the synthesis a new hydrophilic cis-diol-based methacrylic monomer (GEO5MA) by transesterification isopropylideneglycerol penta(ethylene glycol) using methyl methacrylate followed acetone deprote...

The efficient and selective partial oxidation of light alkanes using potassium periodate and potassium chloride is reported. Yields of methane functionalization in trifluoroacetic acid reach >40% with high selectivity for methyl trifluoroacetate. Periodate and chloride also functionalize ethane and propane in good yields (>20%).

A highly sensitive flow injection-chemiluminescence detection (FI-CL) method based on pyrogallol (Pg) chemiluminescent reagent (CLreagent) oxidized by periodate for the determination of propranolol is presented. The presented method is an indirect CL detection method based on the CL emission generated during the oxidation of Pg with the excess of periodate that remains after oxidation of propra...

Recent achievements in the use of TBAI (tetrabutylammonium iodide) and TBHP (tert-butyl hydroperoxide) as an oxidation system have been summarized and discussed.

We describe a method of observing collisions of single femtoliter (fL) oil (i.e., toluene) droplets that are dispersed in water on an ultramicroelectrode (UME) to probe the ion transfer across the oil/water interface. The oil-in-water emulsion was stabilized by an ionic liquid, in which the oil droplet trapped a highly hydrophobic redox probe, rubrene. The ionic liquid also functions as the sup...

A facile synthesis of potentially useful 1-diiodomethylene indanes and cyclopentanes from the regioselective cyclization of acetylenic malonates with the combination of iodosobenzene with tetrabutylammonium iodide in 2,2,2-trifluoroethanol is reported.