Acidity Constants of Boronic Acids as Simply as Possible: Experimental, Correlations, and Prediction [PDF]
The wide use of boronic compounds, especially boronic acids and benzoxaboroles, in virtually all fields of chemistry is related to their specific properties. The most important of them are the ability to form cyclic esters with diols and the complexation
Andrzej Sporzyński +5 more
doaj +2 more sources
The Shift in the Behavior of Methylene Blue Toward the Sensitivity of Medium: Solvatochromism, Solvent Parameters, Regression Analysis and Investigation of Cosolvent on the Acidity Constants [PDF]
Sokaina Saad Hemdan, Hemdan Sokaina Saad
exaly +2 more sources
Spectrophotometric determination of the acidity constants of calcon in water and mixed water–organic solvents [PDF]
The acid–base properties of calcon (1-(2-hydroxy-1-naphthylazo)-2-naphthol-4-sulfonic acid) in water and mixed water–organic solvents at 25 °C at an ionic strength of 0.10 M are studied by a multiwavelength spectrophotometric method. The organic solvents
MOHAMMAD MAZLOUM-ARDAKANI +4 more
doaj +3 more sources
Acid-base equilibria of 2,4-diiodo-6-methylphenylcarbamoylmethyl iminodiacetic acid and its labeling with technetium-99m [PDF]
The acid-base equilibria of a novel hepatobiliary imaging agent, 2,4-diiodo-6-methylphenylcarbamoylmethyl iminodiacetic acid (DIIODIDA) were studied.
Brborić Jasmina S. +4 more
doaj +3 more sources
Synthesis of some bis- and mono-2-hydroxybenzoic acid derivatives and the determination of their acidity constants [PDF]
Several bis- and mono-2-hydroxybenzoic acid derivatives were synthesized by the reaction of methyl 2-hydroxybenzoate with some alcohols (diols, polyols and amino alcohols) and their acidity constants were determined in 60 % aqueous ethanol by the ...
KATARINA M. PENOV GASI +4 more
doaj +3 more sources
Acid dissociation constants of glycopeptides [PDF]
Glycopeptides containing mainly four amino acid residues in the sequence Asn-Leu-Thr-Ser, with small amounts of additional amino acid residues, were isolated from enzymic hydrolysates of hen's-egg albumin. Heterogeneity of the carbohydrate moiety was confirmed. Acid-base titrations showed that the alpha-amino group has a pKa value of 6.43 at 25 degrees
B M, Austen, R D, Marshall
openaire +2 more sources
Protolytic equlibria of bromazepam [PDF]
The protolytic equilibria of bromazepam, an ampholyte sparingly soluble in water, in homogeneous and heterogeneous systems were studied in the pH range 0–14 at 25ºC and at ionic strength of 0.1 mol/dm3 (NaCl).
Pfendt Lidija B. +3 more
doaj +1 more source
This work propose a recursive neural network to solve inverse equilibrium problem. The acidity constants of 7-epiclusianone in ethanol-water binary mixtures were determined from multiwavelength spectrophotmetric data.
Éderson D' Martin Costa +3 more
doaj +1 more source
Protolytic equilibria in homogeneous and heterogeneous systems of ketoconazole and its direct spectrophotometric determination in tablets [PDF]
The acid-base equilibria of a diprotic, slightly hydrosoluble base ketoconazole were studied in homogeneous and heterogeneous water systems. The determinations were performed at 25 ºC at a constant ionic strength of 0.1M(NaCl).
MIRJANA P. VOJIC +3 more
doaj +3 more sources
An LFER study of the protolytic equilibria of 4-aryl-2,4-dioxobutanoic acids in aqueous solutions [PDF]
The protolytic equilibria of 13 4-aryl-2,4-dioxobutanoic acids (ADKs) were spectrophotometrically studied in aqueous solutions in the pH range 1–9 at 25±1 °C and an ionic strength of 0.1 mol l-1 (NaCl), with the exception of the 4-OH- derivative which ...
TATJANA Z. VERBIC +5 more
doaj +3 more sources

