... weight: 596.86Molecular Structure:Product Specification: 1.Astaxanthin Powder 1%, 2%, 2.5%, 3%, 3.5% (by UV or HPLC)2.Shell Cracked ... Astaxanthin Powder (Cell Wall Broken Astaxanthin Powder) 2%, 2.5%, 3%, 3.5 ... for the production of highly concentrated Astaxanthin up to 3.5%. Air pollution, biological and chemical contaminations are prevented ...