A comparison of two colorimetric procedures for the determination of serum glutamic oxaloacetic acid (SCOT) showed that both the dinitrophenylhydrazine and diazonium salt colorimetric assay procedures have good precision and reproducibility acceptable to most clinical laboratories. Babson’s diazonium salt procedure (3) definitely shows greater precision in the important borderline range of valu...

New macrocyclic polyether-diester ligands (3-5) containing the 4H-pyran-4-one subcyclic unit have been prepared by treating various glycols with dimethyl chelidonate (10). In the reaction of compound 10 with ethylene glycol and diethylene glycol, two noncyclic diester and tetraester (6-9) were produced in each case. The new marcocyclic ligand 4 formed stable complexes with benzylammonium pe...

A new nanocomposites series of polypyrrole/reduced graphene oxide (PPy/rGO) and covalently bonded with aryl 4-carboxybenzene diazonium salt (PPy/rGO-aryl-COOH) were prepared by simple one-step chemical oxidative synthesis. Spin coating technique was used to deposit the as-prepared on BOPET substrate for testing their chemiresistive sensitivity properties towards online detection (NO2) vapors at...

new macrocyclic polyether-diester ligands (3-5) containing the 4h-pyran-4-one subcyclic unit have been prepared by treating various glycols with dimethyl chelidonate (10). in the reaction of compound 10 with ethylene glycol and diethylene glycol, two noncyclic diester and tetraester (6-9) were produced in each case. the new marcocyclic ligand 4 formed stable complexes with benzylammonium perchl...

Abstract The use of nitrite as a preservative and provider the stable red color, aroma well taste for meat is allowed within processed products, such beef sausage. However, it should be noted that its does not exceed maximum permitted limit so to negatively impact human health. Excess in body can cause acute poisoning, namely methemoglobinemia chronic poisoning result formation carcinogenic nit...

The majority of alkynyl(aryl)iodonium salts reported in the literature are derived from iodobenzene. This article describes the effects of varying this iodoarene building block on the synthesis, reactivity and stability of these salts. Two procedures to synthesize a variety of known and novel alkynyl(aryl)iodonium tosylates directly from the iodoarene are reported. In the reactions of these sal...