Astaxanthin with Low Molecular Weight is a red colored carotenoid pigment that naturally occurs in most marine crustaceans and some species of fish. Parry Nutraceuticals manufactures Astaxanthin with Low Molecular Weight. Parry Nutraceuticals is an ISO 9001 and ISO 14001 certified company that supplies Organic Spirulina, Carotenoids, Natural Lutein, and Natural Mixed Caternoids. Astaxanthin with Low Molecular Weight is the most stable antioxidant. It is responsible for the reddish tinge that usually accompanies these animals, a prominent example being the pink colored flesh of the salmon fish. Astaxanthin due to its unique molecular structure and its long double-bonded chainĂ¿can stabilize free radicals by adding them to its structure. It has an antioxidant action up to 500 times that of vitamin E.