<unk> , a class of chemical compounds of which many have vitamin E activity, describes a series of organic compounds consisting of various methylated phenols. Because the vitamin activity was first identified in 1936 from a dietary fertility factor in rats, it was given the name<unk> " from the Greek words “τοκος” [birth], and “φορειν”, [to bear or carry] meaning in sum "to carry a pregnancy," with the ending "-ol" signifying its status as a chemical alcohol.<unk> otrienols, which are related compounds, may also have vitamin E activity. All of these various derivatives with vitamin activity, may correctly be referred to as "vitamin E".<unk> s and<unk> otrienols are fat-soluble antioxidants.
The compound α-tocopherol, a common form of<unk>  added to food products, is denoted by the E number "E307".
Tocopherol
Cholic acid
Thiamin
Beta-carotene
Glycolic acid
Lipoic acid
Thiol
Gallic acid