In this study two new azo dyes were prepared from 4-acetaminophenol with 4-amino-N-2-pyrimidinylbenzenesulfonamide & 4-amino-N-(5-methyl-3-isoxazolyl)-benzenesulfonamide were prepared. The prepared by Fox method. the azo dyes were identified by IR- spectrophotometer. UV-visible spectroscopy and elemental analysis (CHN). https://www.megavitamines.shop/product-category/astaxanthin/