Brief Astaxanthin (CAS No. 472-61-7) is a naturally occurring carotenoid pigment renowned for its exceptionally strong antioxidant properties. It is primarily derived from the microalgae Haematococcus pluvialis and is responsible for the pink-red coloration of salmon, krill, and flamingos. Often called the “king of antioxidants,” astaxanthin is widely used in dietary supplements, cosmetics, […]