A steroidal saponin with diverse biological activities; reduces cell growth in a panel of 58 leukemia, non-small cell lung, colon, CNS, prostate, melanoma, ovarian, renal, and breast cancer cell lines (GI50s = 0.58-2.44 μM); reduces growth of fish Ich parasite (I. multifiliis) theronts (EC50 = 0.53 mg/L) and induces 100 and 92.5% mortality of I. multifiliis protomonts and encysted tomonts, respectively, at 0.8 mg/L; decreases the number of I. multifiliis-infected goldfish by ~75% at 1 mg/L in tank water; reduces arachidonic acid-induced ear edema in mice at 100 mg/kg