Assertion: alkaloid's activity | /r/CreatedBy | didehydrostemofoline
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Source sentences:
text: this strong activity of S. collinsiae could be attributed to didehydrostemofoline (173), whose LC 50 value at 0.84 ppm was higher than that of the co-occurring stemofoline (160) with 2.04 ppm and the closely related 2′-hydroxystemofoline (164) with 30.33 ppm.