α-Tocopheryl acetate (alpha-tocopherol acetate), also known as vitamin E acetate, is a synthetic form of vitamin E. It is the ester of acetic acid and α-tocopherol.

α-Tocopheryl acetate

Names
Preferred IUPAC name (2R)-2,5,7,8-Tetramethyl-2-[(4R,8R)-4,8,12-trimethyltridecyl]-3,4-dihydro-2H-1-benzopyran-6-yl acetate
Other names α-Tocopherol acetate Vitamin E acetate
Identifiers
CAS Number	58-95-7 RRR-α-isomer Y
3D model (JSmol)	Interactive image
ChEMBL	ChEMBL1047 Y
ChemSpider	77987 Y
DrugBank	DB14003
ECHA InfoCard	100.000.369
PubChem CID	86472
UNII	A7E6112E4N Y
CompTox Dashboard (EPA)	DTXSID1031096
InChI InChI=1S/C31H52O3/c1-21(2)13-10-14-22(3)15-11-16-23(4)17-12-19-31(9)20-18-28-26(7)29(33-27(8)32)24(5)25(6)30(28)34-31/h21-23H,10-20H2,1-9H3/t22-,23-,31-/m1/s1 Y Key: ZAKOWWREFLAJOT-CEFNRUSXSA-N Y InChI=1/C31H52O3/c1-21(2)13-10-14-22(3)15-11-16-23(4)17-12-19-31(9)20-18-28-26(7)29(33-27(8)32)24(5)25(6)30(28)34-31/h21-23H,10-20H2,1-9H3/t22-,23-,31-/m1/s1 Key: ZAKOWWREFLAJOT-CEFNRUSXBQ
SMILES O=C(Oc2c(c(c1O[C@](CCc1c2C)(C)CCC[C@H](C)CCC[C@H](C)CCCC(C)C)C)C)C
Properties
Chemical formula	C31H52O3
Molar mass	472.743 g/mol
Appearance	pale yellow, viscous liquid
Melting point	–27.5 °C
Boiling point	240 °C decays without boiling
Solubility in water	insoluble
Solubility	soluble in acetone, chloroform, diethyl ether; poorly soluble in ethanol
Hazards
NFPA 704 (fire diamond)	1 1 0
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Y verify (what is YN ?) Infobox references

The U.S. Centers for Disease Control and Prevention says that vitamin E acetate is a very strong culprit of concern in the 2019 outbreak of vaping-associated pulmonary injury (VAPI), but there is not yet sufficient evidence to rule out contributions from other chemicals. Vaporization of this ester produces toxic pyrolysis products.