Octahydrocurcumin is a hydrogenated derivatives of curcumin; metabolite of curcumin.IC50 value:Target: OKT3-induced PBMC proliferation was inhibited by octahydrocurcumin with IC50 of 82 uM. The investigated substances with the strongest effect on radical scavenging were tetrahydro-, hexahydro-, and octahydrocurcumin with IC50 values of 10.0, 11.7, and 12.3 microM, respectively [1]. curcumin and tetrahydrocurcumin significantly inhibited the release of prominent cytokines, including tumor necrosis factor?α (TNF?α) and interleukin?6 (IL?6); however, hexahydrocurcumin and octahydrocurcumin did not significantly alter cytokine release [2]. Hydrogenated derivatives of curcumin exhibited stronger DPPH scavenging activity compared to curcumin and a reference antioxidant, trolox. The scavenging activity significantly decreased in the order THC>HHC=OHC>trolox>curcumin>Dmc>>>Bdmc [3].

[1]. Deters M, et al. Different curcuminoids inhibit T-lymphocyte proliferation independently of their radical scavenging activities. Pharm Res. 2008 Aug;25(8):1822-7. [2]. Zhao F, et al. Curcumin and its major metabolites inhibit the inflammatory response induced by lipopolysaccharide: Translocation of nuclear factor-κB as potential target. Mol Med Rep. 2015 Apr;11(4):3087-93. [3]. Somparn P, et al. Comparative antioxidant activities of curcumin and its demethoxy and hydrogenated derivatives. Biol Pharm Bull. 2007 Jan;30(1):74-8.