Results 211 to 220 of about 86,679 (262)

Dissociation constants and structure of ergothioneine

Analytical Biochemistry, 1964
Abstract The structure of ergothioneine was studied from the dependence of ultraviolet spectra on pH and H0. This and the correlation with some model compounds strongly suggests that ergothioneine exists in the form of a dipolar betaine.
B, STANOVNIK, M, TISLER
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Acid Dissociation Constants of Phenylalkanolamines

Journal of Pharmaceutical Sciences, 1962
The acid dissociation constants of phenylephrine, synephrine, and tyramine were investigated by the new spectrophotometric method of Edsall. Epinephrine was studied by a titration and complexation method. It is concluded from analysis of the spectral data that the phenolic function is a stronger acid than the alkylammonium group.
S, RIEGELMAN, L A, STRAIT, E Z, FISCHER
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Degeneracy and Dissociation Constants

Nature, 1940
THE importance of degeneracy in enhancing the stability of radicals such as triphenylmethyl has been emphasized by many authors; for example, Pauling and Wheland1, Ingold2, etc. This being so, it is strange that no relations have been suggested between complexity of degeneracy (which we may define in terms of the number of possible resonating ...
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Dissociation Constants of Polyethyleneamines. II. The Dissociation Constants of Tetraethylenepentamine

The Journal of Physical Chemistry, 1957
Hans B. Jonassen, Fred W. Frey, Anneke Schaafsma   +2 more
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Dissociation constants of some organic acids

Talanta, 1984
Dissociation constants of di(nonylphenyl)dithiophosphoric acid, di(nonylphenyl)phosphoric acid and 9-phenyltetracosansulphuric acid, determined by two methods, are reported.
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Apparent Dissociation Constants of Haloaralkylamines

Journal of Medicinal and Pharmaceutical Chemistry, 1962
S L, SHAPIRO, E S, ISAACS, V, BANDURCO, L, FREEDMAN   +3 more
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Potentiometric determination of dissociation constants

Journal of Pharmaceutical Sciences, 1967
L Z, Benet, J E, Goyan
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Dissociation Constant

2008
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Dissociation Constants

1955
H.C. BROWN, D.H. McDANIEL, O. HÄFLIGER
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Dissociation Constant

2006
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