2-Heptanol-d 5 is deuterated labeled Citronellol. Citronellol ((±)-Citronellol) is a monoterpene Pelargonium graveolens. Citronellol ((±)-Citronellol) induces necroptosis of cancer cell via up-regulating TNF-α, RIP1/RIP3 activities, down-regulating caspase-3/caspase-8 activities and increasing ROS ( reactive oxygen species ) accumulation.