3-O-Ethyl Ascorbic Acid is a modified form of Vitamin C where an ethyl group is attached to the third carbon position of ascorbic acid. This modification improves the stability and skin penetration compared to pure vitamin C (L-ascorbic acid).
 
Applications: Face serums Skin brightening creams
Appearance:  White to off-white crystalline powder
Solubility:  Soluble in water and alcohol
pH Range: Works best in pH 3–6
Chemical Formula: C₈H₁₂O₆ 
Cas. No: 86404-04-8