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V. M. Berezovskii, The Chemistry of the Vitamins [in Russian], Moscow (1959).
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Translated from Khimiko-Farmatsevticheskii Zhurnal,Vol. 5, No. 12, pp. 48–50, December, 1971.
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Belen'kaya, S.L., Tikhomirova, G.P. & Prokhorenko, L.A. The use of physicochemical methods of analysis for monitoring some stages of the synthesis of vitamin PP. Pharm Chem J 5, 759–760 (1971). https://doi.org/10.1007/BF00776783
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DOI: https://doi.org/10.1007/BF00776783