Skin is a barrier of our body with lipophilic membrane. Therefore skin absorption of chemicals is determined by its physicochemical properties.
Lipophilicity (Soluble in fat/lipid) is one of the important factors that affect the skin permeation process.
Melanocytes (melanin synthesizing cells) and keratinocytes exists in epidermis, the outermost layer of the skin. Lipophilic (oil soluble) compounds penetrate deeper in the skin layers.
Oxyresveratrol tetra acetate is more lipophilic than Oxyresveratrol. The compound (OTA)show better permeability and bioavailability on skin. The limitations of chemical stability poor solubility and low bio availability of the parent compound has been overcome with OTA. CLINICAL trial with OTA formulations establish the same.
OTA Is considered as the prodrug of oxyresveratrol,Once inside the skin cell it decomposes in presence of enzyme , releasing oxyresveratrol imparting better activity in the cells.
Tyrosinase inhibitory activity Of OTA (Oxyresveratrol tetra acetate) slightly more than Oxyresveratrol. Moreover OTA is not susceptible to oxidative discoloration in formulation and is less cytotoxic.
Skin lightening formulation – 0.20 to 0.40 gms/100 gm.
| Product | Oxyresveratrol Tetra Acetate |
| Chemical Name | 2.4.3'.5'-Tetraacetyl oxyresveratrol |
| Molecular Formula | C22H20O8 |
| Molecular Weight | 412.4 |
| Synonyms | Oxyresveratrol tetra acetate |
| Physical Properties | White crystalline solid |
| Solubility | Soluble in Isopropyl alcohol Methanol, Ethanol and Acetone |
| Chemical Reaction | Characteristic reactions of stilbene esters |
| Bio Activity | Extremely effective Tyrosinase inhibitor |