Results 11 to 20 of about 3,274,216 (342)
Acid dissociation constants of glycopeptides [PDF]
Biochemical Journal, 1977 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
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Journal of Chemical Theory and Computation, 2020 Proton transfer at metal oxide/water interfaces plays an important role in electrochemistry, geochemistry and environmental science. The key thermodynamic quantity to characterize this process is the surface acidity constant.
Mei Jia +4 more
semanticscholar +1 more source
Protolytic equlibria of bromazepam [PDF]
Journal of the Serbian Chemical Society, 2002 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
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Química Nova, 2012 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
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Aromatic nitrations by mixed acid. Slow liquid-liquid reaction regime [PDF]
, 1995 Aromatic nitrations by mixed acid have been selected as a specific case of a heterogeneous liquid-liquid reaction. An extensive experimental programme has been followed using adiabatic and heat-flow calorimetry and pilot reactor experiments, supported by
Alos, M.A. +6 more
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Protolytic equilibria in homogeneous and heterogeneous systems of ketoconazole and its direct spectrophotometric determination in tablets [PDF]
Journal of the Serbian Chemical Society, 2005 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
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An LFER study of the protolytic equilibria of 4-aryl-2,4-dioxobutanoic acids in aqueous solutions [PDF]
Journal of the Serbian Chemical Society, 2007 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
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Gas phase carbon acidity and correlations with aqueous pK~a~ values: A comparison of B3LYP/6-311++G(d,p), Gaussian-4 (G4), and experimental approaches [PDF]
, 2010 Gas phase standard state (298.15 K, 1 atm) calculations were conducted at the B3LYP/6-311++G(d,p) density functional and the Gaussian-4 (G4) composite method levels of theory to estimate the acidity of various carbon acids.
Kaya Forest, Sierra Rayne
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, 2020 Isoalloxazine is the core chromophore present in the cofactor of flavoproteins. Naturally, flavin usually exists in five different redox forms in protein milieu by accepting up to 2-electrons and 2-protons.
Padmabati Mondal +2 more
semanticscholar +1 more source
Redox properties of alkyl-substituted 4-aryl-2,4-dioxobutanoic acids [PDF]
Journal of the Serbian Chemical Society, 2017 Redox properties of a set of aryldiketo acids (ADKs), small organic molecules that comprise 2,4-dioxobutanoic acid moiety, were studied. Along with well-known HIV-1 integrase (IN) inhibition, ADKs exert widespread biological activities.
Cvijetić Ilija N. +6 more
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