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Translated from Khimiko-Farmatsevticheskii Zhurnal, Vol. 4, No. 9, pp. 23–26, September, 1970.
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Sarenko, A.S., Éfros, L.S. & Kvitko, I.Y. Heterocyclic analogs of xanthones chromono(3,2-d)pyrazoles. Pharm Chem J 4, 488–491 (1970). https://doi.org/10.1007/BF00771349
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DOI: https://doi.org/10.1007/BF00771349