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. Author manuscript; available in PMC: 2009 Nov 4.
Published in final edited form as: J Pharm Biomed Anal. 2008 Aug 14;48(3):1046–1049. doi: 10.1016/j.jpba.2008.08.005

Figure 3.

Figure 3

UV-vis spectra of an authentic (solid) and a commercial (dash) sample of MnTBAP. The data were obtained by diluting a stock solution of MnTBAP (~0.1 mM; pH 12) in phosphate buffer (pH 7.8; 0.05 M). The molar absorptivity values of authentic MnTBAP (log ε468 = 5.04 and log ε414 = 4.70) and that of H2TBAP (log ε414 = 5.59) were used to estimate the ~25 % contribution of the metal-free ligand in the commercial sample of MnTBAP.