Review Article
Protonation Equilibria of Biologically Active Ligands in Mixed Aqueous Organic Solvents
Table 3
Protonation constants of some α-amino acids in water and water-ethanol mixtures Temp. = 25°C and mol·dm−3 NaCl.
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Note. E: ethanol, W: water, Cys = L-cysteine, Tyr = L-tyrosine, Trp = L-tryptophane, Lys = L-lysine, and His = L-histidine. aData taken from reference [50]; : corresponds to 11 species (i.e., L− + H+ LH); corresponds to 12 species (i.e., LH + H+). The % is expressed as (volume/Volume). |