3d image of sigma-tocopherol skeletal formula

sigma tocopherol tcp methylated phenol vitamin alcohol antioxidant tocotrienol chromane ring side chain biological membranes activity food additive isomer supplement bioactive nutrient prescription drug nutraceutica dietary vegetable oils nuts seeds deficiency synthetic semi-synthetic natural mixed racemic alternative medicine complementary orthomolecular megavitamin therapy antioxidant alzheimer's disease cancer cataracts cardiovascular topical 3d molecule molecular formula skeletal