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. 2019 Apr 16;24(8):1493. doi: 10.3390/molecules24081493

Figure 3.

Figure 3

UV absorption (left) and fluorescence spectra (right) of N2,3-etheno-O6-methylguanine at various pHs: Cationic form (pH 2, red), neutral (pH 6.5, green) and a monoanionic form (pH 11, blue); excitation at 280 nm.