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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 11, p. 1563, November, 1989.
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Pyshchev, A.I., Butenko, L.I., Oganesyan, É.T. et al. Formation of cyanines from pyrylium salts and aliphatic acid anhydrides. Chem Heterocycl Compd 25, 1311 (1989). https://doi.org/10.1007/BF00481532
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DOI: https://doi.org/10.1007/BF00481532