Tocopherol and tocotrienols are two of the eight compounds together referred to as vitamin E. A further division into alpha, beta, gamma, and delta vitamins is made for each group. Themain vitamin is thought to be the vitamin -tocopherol. One of the first two antioxidant chemicals to be offered as dietary supplements was vitamin E. The other was vitamin C. When researching fat-soluble compounds, it is occasionally utilised as the reference antioxidant compound. Within cells and for phosphate groups, vitamin E may act as a signalling molecule.