Molecular Structure of Vitamin E Acetate (CAS NO.54-22-8):

Molecular Formula: C₃₁H₅₂O₃
Molecular Weight: 472.7428
IUPAC Name: [(2R)-2,5,7,8-Tetramethyl-2-[(4R,8R)-4,8,12-trimethyltridecyl]-3,4-dihydrochromen-6-yl] acetate
Synonyms of Vitamin E Acetate (CAS NO.54-22-8): (2R)-2,5,7,8-Tetramethyl-2-[(4R,8R)-4,8,12-trimethyltridecyl]-3,4-dihydro-2H-chromen-6-yl acetate ; [2R*(4R*,8R*)]-3,4-Dihydro-2,5,7,8-tetramethyl-2-(4,8,12-trimethyltridecyl)-2H-1-benzopyran-6-ol Acetate ; 2H-1-benzopyran-6-ol, 3,4-dihydro-2,5,7,8-tetramethyl-2-[(4R,8R)-4,8,12-trimethyltridecyl]-, acetate, (2R)- ; a-Tocopherol Acetate ; a-Tocopheryl Acetate
CAS NO: 54-22-8
Index of Refraction: 1.487
Surface Tension: 33.7 dyne/cm
Density: 0.941 g/cm³
Flash Point: 235.6 °C
Enthalpy of Vaporization: 75.08 kJ/mol
Boiling Point: 485.3 °C at 760 mmHg
Vapour Pressure: 1.42E-09 mmHg at 25°C

 Vitamin E Acetate (CAS NO.54-22-8) is used as an alternative to tocopherol itself because the phenolic hydroxyl group is blocked, providing a less acidic product. It is believed that the acetate is slowly hydrolyzed once it is absorbed into the skin, regenerating tocopherol and providing protection against the sun's ultraviolet rays. It is often used in dermatological products such as skin creams.

Tocopheryl acetate, also known as vitamin E acetate, is a common vitamin supplement with the molecular formula C₃₁H₅₂O₃ (for 'α' form). It is the ester of acetic acid and tocopherol (vitamin E).