astaxanthin is a keto-carotenoid. it belongs to class of chemical terpenes structural chemical formula and molecule model on

antioxidant astaxanthin astaxanthine atom atomic beta blue carbon carotene carotenoid carrot chemical chemistry compound crustacean dark education formula haematococcus hydrogen illustration keto krill lobster molecular molecule organic oxygen phytochemical pigment red salmon schematic science shrimp structural structure study supplement terpene vector vitamin white xanthophyll