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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 10, pp. 1432–1433, October, 1991.
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Briks, Y.L., Romanov, N.N. Polymethine dyes based on cyclohepta[c]pyrrole. Chem Heterocycl Compd 27, 1157–1158 (1991). https://doi.org/10.1007/BF00486821
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DOI: https://doi.org/10.1007/BF00486821