Two simple, sensitive, accurate and economic methods A and B have been developed for the quantitative estimation of vancomycin hydrochlorid (VHC) and its formulations using another two drug compounds as a coupling reagents.The proposed methods are based on a coupling reaction between VHC and diazotized procain (method A) or diazotized sulphacetamide sodium (method B) in alkaline medium to form ...

Genistein (GEN) is one of the predominant dietary isoflavones found in legumes such as soybeans. has been recommended an osteoporosis treatment for postmenopausal women and elderly men, with intention reducing cardiovascular disease hormone-dependent malignancies. Therefore, two sensitive simple methods quantifying it supplements preparation were developed.The first method (A) comprised employi...

A simple and efficient one-pot method for the preparation of aromatic iodides has been developed by sequential diazotization–iodination of aromatic amines employing sodium nitrite and sodium iodide in the presence of acidic ionic liquid N-methyl-2-pyrrolidonum hydrosulfate ([H-NMP]HSO4). The diazonium salts that are formed by this ionic liquid are stable at room temperature and r...

Diazotization of 3-amino-2-cMoro pyridine (3) in the presence of dithizone (5) gave dphenyl-2-phenylazo-4H-pyrid[o3 ,2-e] [1,3,4] thiadiazine (6). Reaction of 2- chloro-3-nitropyridine (2, G=H) with (5) dfordd 4-phenyl -2-phenylazo -4Hpyrido [2,3-el [1,3,4] thiadiazine (7). Reduction of the latter with H gas in the presence of Raney nickel gave the corresponding amino derivative (12). One ...

The aim of this research is to determine the optimum concentration coupling agent used in chloramphenicol analysis, then calculate limit detection that photometric reaction. Chloramphenicol a colorless compound often abused animals whose products are consumed by humans. has side effects on human body. So, must be analyzed. To facilitate analysis process, converted into colored compounds called ...

Ferrocene derivatives are amongst the most promising electroactive organic electrolytes. The bottleneck problems of their application in aqueous redox flow batteries poor solubility and lower potential as well complexity modification methods to solve these problems. In this study, a benzenesulfonic acid group is easily introduced into ferrocene structure by mature diazotization reaction, synthe...

ABSTRACT. The azo ligand obtained from the diazotization reaction of 2-aminobenzothiazole and 4-nitroaniline yielded a novel series complexes with Co(II), Ni(II), Cu(II), Zn(II) ions. were investigated using spectral techniques such as UV-Vis, FT-IR, 1H 13C NMR spectroscopic analyses, LC-MS atomic absorption spectrometry, electrical conductivity, magnetic susceptibility. molar ratio synthesized...