Literature References: Exists as a glucoside in the rhizomes of Podophyllum peltatum L., Berberidaceae: von Wartburg et al.,Helv. Chim. Acta 40, 1331 (1957). Isoln from resin podophyllum: Hartwell, Detty, J. Am. Chem. Soc. 70, 2833 (1948); 72, 246 (1950);
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