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Mass spectra of phenazine, phenazine mono-N-oxide, phenazine di-N-oxide, 1-methyl-, 1-methoxy-, 2-methoxy phenazines were analyzed. The results disclosed that their fragmentation pathways were comparable with the aromatic tricyclic compounds. And chromatographic behaviors of phenazine derivatives were examined using mainly 20 kinds of chlorophenazines considering the polarisabilities of phenazine nuclei.
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Yutaka Morita (1966) studied this question.
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