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UV/VIS spectrum of C-diazocine-functionalized axitinib derivative (7). Enlarged view of nπ* band of meta-linked Z-7 (red) in DMSO (100 µM) as well as photostationary states (PSS) after irradiation at 405 nm (blue). Spectrum of PSS after irradiation at 530 nm is identical to the spectrum of the pure Z-isomer (not shown for reasons of clarity).
