4-(2-(4-Halophenyl)hydrazinyl)-6-phenylpyridazin-3(2H)-ones 1a,b were prepared and treated with phosphorus oxychloride, phosphorus pentasulphide and ethyl chloroformate to give the corresponding chloropyridazine, pyridazinethione, oxazolopyridazine derivatives 2-4, respectively. Compound 2 reacted with hydrazine hydrate to afford hydrazinylpyridazine 7. The reaction of 4-(2-(4-chlorophenyl)hydr...

An 81-year-old woman, who presented with sudden episodes of spontaneous bleeding, was found to have a specific inhibitor of factor XIII. Her fibrin clots had 70% y y and no a polymer formation, under conditions where normal fibrin was fully cross-linked; the patient’s clots were soluble in urea or monochloroacetic acid. Factor Xll l activity in her plasma was 24%. measured by the dansylcadaveri...

An 81-year-old woman, who presented with sudden episodes of spontaneous bleeding, was found to have a specific inhibitor of factor XIII. Her fibrin clots had approximately 70% gamma-gamma and no alpha polymer formation, under conditions where normal fibrin was fully cross-linked; the patient's clots were soluble in urea or monochloroacetic acid. Factor XIII activity in her plasma was 24%, measu...

AND YUEFENG F. XIE aloacetic acids (HAAs) are a group of disinfection by-products (DBPs) regulated under the Stage 1 Disinfectants/Disinfection Byproducts Rule (D/DBPR). The maximum contaminant level for five HAAs is 60 μg/L. These five regulated HAAs are monochloroacetic acid (ClAA), dichloroacetic acid (Cl2AA), trichloroacetic acid (Cl3AA), monobromoacetic acid (BrAA), and dibromoacetic acid ...

We report a technique for the rapid, room temperature derivatization of aqueous carboxylic acids to the corresponding 2,2,2-trifluoroethylamide derivative. 3-Ethyl-1-[3-(dimethylamino)propyl]carbodiimide hydrochloride (EDC) and 2,2,2-trifluoroethylamine hydrochloride (TFEA) were added to aqueous samples of several acids of interest in environmental analytical chemistry, including benzoic acid, ...

Objectives: This study aims to improve and expand the performance of carboxy methyl mung bean starch (CMMS) as a gelling agent and an oil-inwater (o/w) emulsion stabilizer via cross-linking reaction with dichloroacetic acid (DCA). Methods: Mung bean starch was carboxymethylated with chloroacetic acid and subsequently cross-linked with 0.1-10% DCA. Fifteen cross-linked carboxy methyl mung bean s...

chemistry of anion recognition is now being uncovered and producing a variety of practical applications, including separation and sensing. 1–3 The use of Lewis acid-base interactions is a promising approach in this respect. We previously found that zirconium(IV) could be immobilized on a chelating polymer, having an iminodiacetate (IDA) group (–LH2), as a 1:1 complex of [(–L)Zr(OH)2]. 4,5 This ...