Dihydrotanshinone I (CAS No 87205-99-0) is a bioactive compound derived from the roots of Salvia miltiorrhiza commonly used in traditional Chinese medicine It belongs to the research category of natural product-based therapeutics with potential anticancer and anti-inflammatory activities The compound exerts its effects primarily through the inhibition of multiple signaling pathways including the NF- B and STAT3 pathways which are critical in cell proliferation and survival In vitro studies have shown that Dihydrotanshinone I possesses activity in the nanomolar to low micromolar range indicating strong potency It is extensively utilized in various cell models and animal studies to investigate its therapeutic potential and mechanism of action particularly in the context of drug screening for cancer treatment Experimental concentrations typically depend on the specific research design with careful adjustment to match the intended biological outcomes