Product Name: Tetrahydrocurcumin Molecular Formula: C21H24O6 Molecular Weight: 372.41 Appearance: Light Yellow to Yellow powder Purity: 98% CAS NO.: 36062-04-1 EINECS No.: 609-201-3 Supplier: ZHENYIBIO Tetrahydrocurcumin is an antioxidant and skin-whitening ingredient.The interest in tetrahydrocurcumin research is increasing because it is superior to curcumin in its solubility in water, chemical stability, bioavailability, and anti-oxidative activity. Curcumin metabolizes into tetrahydrocurcumin by bacterial enzyme NADPH-dependent curcumin reductase in the intestine.