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Translated from Khimiko-Farmatsevticheskii Zhurnal, Vol. 12, No. 1, pp. 136–138, January, 1978.
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Lyakina, N.N., Brutko, L.I. Identification of caffeine and theobromine by chromatography in a thin layer of a polyamide. Pharm Chem J 12, 137–139 (1978). https://doi.org/10.1007/BF01880964
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DOI: https://doi.org/10.1007/BF01880964