Zeaxanthin (Standard) is the standard substance of Zeaxanthin, and it is applicable for quantitative analysis, quality control, and related research in biochemical experiments. Zeaxanthin is a dietary carotenoid that accumulates in the retina (particularly the macula) and has antioxidant activity that may improve obesity, prevent age-related macular degeneration, and protect against nonalcoholic steatohepatitis.