Sesamin (CAS 607-80-7) is a naturally occurring furofuran lignan primarily isolated from sesame seeds (Sesamum indicum). With the molecular formula C₂₀H₁₈O₆ and molecular weight 354.35 g/mol, it appears as a white to off-white powder. As a specialty chemical and analytical reference standard, sesamin is used in pharmaceutical research, quality control, and analytical method development to ensure purity and potency in formulations. It serves as a marker compound for sesame oil extraction and lignan content analysis via techniques such as HPLC and GC-MS. While noted for its antioxidant, anti-inflammatory, and lipid-regulating properties in biological studies, it is supplied for laboratory and research applications, not direct consumer use.