NCI Drug Dictionary

The NCI Drug Dictionary contains technical definitions and synonyms for drugs/agents used to treat patients with cancer or conditions related to cancer. Each drug entry includes links to check for clinical trials listed in NCI's List of Cancer Clinical Trials.

The orally bioavailable delta form of the naturally-occurring fat-soluble vitamin E, mostly found in soybean and corn oils, with potential antioxidant activity. Although the exact mechanism of action of this tocopherol has yet to be fully identified, delta-tocopherol appears to have the ability to scavenge free radicals, thereby protecting cells against oxidative damage. Check for active clinical trials using this agent. (NCI Thesaurus)

Chemical structure:
  • [2R-[2R*(4R*,8R*)]]-3,4-dihydro-2,8-dimethyl-2-(4,8,12-trimethyltridecyl)-2H-1-benzopyran-6-ol
  • 2,8-dimethyl-2-(4,8,12-trimethyltridecyl)chroman-6-ol