Purity >98%. L-Sulforaphane is an isothiocyanate derived from the natural compound glucoraphanin, which is abundant in cruciferous vegetables, including broccoli. It has powerful antioxidant, anti-inflammatory, and anti-carcinogenic effects. L-Sulforaphane, at 40 μM, activates nuclear factor erythroid 2-related factor 2- (Nrf2) mediated gene expression by disrupting its association with Kelch-like ECH-associated protein 1 (Keap1), allowing Nrf2 to enter the nucleus to alter transcription. In this way, sulforaphane induces the expression of phase II detoxification enzymes, which in turn provide diverse beneficial effects.