Composition #5: LEE, KH., ANUFORO, DC., HUANG, ES., PIANTADO.C. ANTITUMOR AGENTS .1. ANGUSTIBALIN, A NEW CYTOTOXIC SESQUITERPENE LACTONE FROM BALDUINA-ANGUSTIFOLIA (PURSH) ROBINS. JOURNAL OF PHARMACEUTICAL SCIENCES, 1972, vol. 61, no. 4, p. 626–&. DOI: 10.1002/jps.2600610431.
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