The conditions for the formation of species from monovalent salts in protophobic aprotic solvents have been examined for lithium, triethylammonium and 1,3-diphenylguanidinium picrates (2,4,6-trinitrophenolates) by means of conductometry. The molar conductivities of lithium picrate (Li+ Pic−, (0....

Today the fundamental aspect of the researchers is to explore maximum physical properties of the material for device fabrication. In the present article, single crystal X-ray diffraction has been carried out to verify the formation of the synthesized compound. In addition to that, powder X-ray d...

A report is given of the fabrication of some laboratory model lithium cells using solid polymer electrolytes (SPE). These SPEs are based on poly(ethylene oxide) (PEO) and lithium picrate/lithium lactate salts. Electrochemical parameters (i.e., open-circuit potential, short-circuit current) and t...

The distributions of lithium cation, picrate anion and dibenzo-14-crown-4 (DB14C4) and its analogs between water and various solvents, as well as the formation of ion pairs of lithium picrate and crown in these solvents, were studied spectrophotometrically at 24 ± 1 °C. The solvents used inclu...

The specific conductance of different concentrations of both sodium picrate and potassium picrate in 2-butanone have been measured experimentally at 298 K. The conductance data were analyzed by applying the Lee–Wheaton conductance equation where the molar conductance, the limiting molar conduct...

BackgroundThe development of lithium-associated kidney damage is still a matter of controversy. We have addressed this question by investigating the role of somatic comorbidity for developing kidney failure in lithium treated patients.

Electrical conductance measurements of lithium picrate and lithium perchlorate in isodielectric solvents (i.e. acetonitrile, methanol and N,N-dimethylformamide in the concentration range 10−4 ≤ c/mol dm−3 ≤ 10−2 are reported. The data analysed by the Fuoss three-parameter equation have shown t...

The complexation of lithium picrate (LiPic) with the new crown ether Tetracyclohexan(b,e,h,k)(1,4,7,10)tetraoxacyclododecane (CE) was studied spectrophotometrically in 1,2-dichloroethane and 1% 1,4-dioxane as solvating agent by means of computational methods. The spectra, obtained from the addit...

Conductivity data for lithium picrate and lithium perchlorate in acetonitrile + nitromethane isodielectric mixtures at 25°C are reported. Treatment of the data in terms of the Fuoss 1980 equation shows that the ion pair association of these electrolytes depends strongly on the composition rathe...

Potentiometric, conductometric and preparative studies of beryllium 2-hydroxy-3-naphthoate systems indicate the formation of two complexes; the 1:1 complex predominates at a pH of about 5.5 and the 1:2 complex in the ionic form at pH 8–9. In aqueous medium the 1:2 complex is precipitated first ...

Ever since Amé Pictet and Theodor Spengler discovered their way to synthesize tetrahydroisoquinolines and β-carbolines, their method became a powerful methodology for the preparation of many natural products and pharmaceuticals. This method involves the reaction of arylethanamines and a carbon...

In the present study, we investigated the effect of a nitric oxide (NO) scavenger, 2-(4-carboxyphenyl)-4,4,5,5-tetramethylimidazoline-1-oxyl 3-oxide [carboxy-PTIO], on endothelium-dependent relaxation of a series of blood vessels from rabbits, such as thoracic aorta and femoral, renal, mesenteri...

2-(4-Carboxyphenyl)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide (carboxy-PTIO) has been increasingly used as nitric oxide (NO) scavenger. Carboxy-PTIO reacts with NO to form nitric dioxide and 2-(4-carboxyphenyl)-4,4,5,5-tetramethylimidazoline-1-oxyl (carboxy-PTI). In rat C6 glioma cells expre...

Carboxy-PTIO reacts rapidly with NO to yield NO2 and has been used as a scavenger to test the importance of nitric oxide (NO) in various physiological conditions. This study investigated the effects of carboxy-PTIO on several NO- and peroxynitrite-mediated reactions. The scavenger potently inhib...

Passive sampling devices are popular in applications which do not require the monitoring of hourly concentrations. Nitrogen oxides are often collected using filters coated with 2-phenyl-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide (PTIO). The filter extract can then be analyzed using flow injec...

We report here the construction of a plasmid vector designed for the efficient electrotransformation of the periodontal pathogen Porphyromonas gingivalis. The novel Escherichia coli–Bacteroides/P. gingivalis shuttle vector, designated pTIO-1, is based on the 11.0-kb E. coli–Bacteroides conjuga...

The present study describes the synthesis of formycin 5′-triphosphate (FoTP), formycin 5′-monophosphate (FoMP), and formycin 3′,5′-cyclic monophosphate (cFoMP) from formycin A (FoA). These compounds, analogs of ATP, AMP, cAMP, and adenosine, respectively, are all fluorescent and differ chemi...

Formycin B 5′-monophosphate (Form B-MP) and allopurinol riboside 5′-monophosphate (HPPR-MP) are isomers of IMP that are metabolically produced when Leishmania spp. are incubated with the antileishmanial agents formycin B and allopurinol or allopurinol riboside. The interactions of Form B-MP wi...

1.1. Fluorescence measurements have shown that formycin triphosphate (FTP) or formycin diphosphate (FDP) bound to (Na+ + K+)-ATPase (ATP phosphohydrolase, EC 3.6.1.3) in Na+-containing media can be displaced by the following ions (listed in order of effectiveness): Tl+, K+, Rb+, NH4+, Cs+.2.2. T...

Steady-state and time-resolved emission spectroscopy were used to study the interaction of Escherichia coli purine nucleoside phosphorylase (PNP) with its specific inhibitors, viz. formycin B (FB), and formycin A (FA) and its N-methylated analogues, N(1)-methylformycin A (m1FA), N(2)-methylformy...