Figure 2
pH dependence of the 1H NMR-spectra of taurine at 25°C and 37°C. pH dependence of the chemical shift (⊠) at 25°C (solid triangles and squares) and 37°C (open triangles and squares) of the signals. The lines through the data points were obtained from fits using the pH equation. The estimated pKa values are 9.0 (25°C) and 8.6 (37°C).