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Electrospray tandem mass spectrometry of 2H-chromenes

Several 2H-chromenes, derived from carbazoles, were analyzed by electrospray tandem mass spectrometry. The 2H-chromenes constitute an important class of compounds that exhibit photochromic activity. The fragmentation pathways of the protonated molecular species [M+H]+ were studied and main fragmentation pathways of these compounds were identified. Fragmentation pathways of [M+D]+ ions were also studied in orde...