3-O-Ethyl Ascorbic Acid is a derivative modified from Vitamin C. It is an excellent skin whitening active ingredient with anti-oxidation, anti-wrinkle and anti-inflammatory effects. 3-O-Ethyl Ascorbic Acid exhibits very good stability due to its unique chemical structure in that the ethyl group forms an ether with the 3-hydroxy group of the ascorbic acid. 3-O-Ethyl Ascorbic Acid inhibits the activity of Tyrosinase, therefore, it prevents the synthesis of Melanin. 3-O-Ethyl Ascorbic Acid also promotes Collagen synthesis which helps improve the complexion and elasticity of skin. As a common effects shared with Vitamin C, 3-O-Ethyl Ascorbic Acid is very effective in scavenging free radicals. Apart from all of these, 3-O-Ethyl Ascorbic Acid can regulate immunity and resist inflammation. INCI Name: 3-O-Ethyl Ascorbic Acid CAS No.: 86404-04-8 M. W.: 204.18 M. F.: C8H12O6 Specifications: Appearance:White to off-white powder Odor:Slight characteristic odor pH:3.0 - 4.5 Melting point:112 - 115°C Loss on drying:â?¤ 1.0% Residue on ignition:â?¤ 0.1% Purity (HPLC):â?¥ 99.5% Heavy metals:< 10 mg/kg Total bacteria:< 100 CFU/g Yeast and mold:< 10 CFU/g