NCI Drug Dictionary

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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.

An orally-active polyphenolic aldehyde with potential antineoplastic activity. Derived primarily from unrefined cottonseed oil, gossypol induces cell cycle arrest at the G0/G1 phase, thereby inhibiting DNA replication and inducing apoptosis. This agent also inhibits cell-signaling enzymes, resulting in inhibition of cell growth, and may act as a male contraceptive. Check for active clinical trials using this agent. (NCI Thesaurus)

Synonym:Cottonseed Meal Toxin
Gossypol (Racemic)
Chemical structure:
  • 1,1',6,6',7,7'-Hexahydroxy-3,3'-dimethyl-5,5'-bis(1-methylethyl)[2,2'-binaphthalene]-8,8'-dicarboxaldehyde
  • 1,1',6,6',7,7'-Hexahydroxy-5,5'-diisopropyl-3-3'-dimethyl[2,2'-binaphthalene]-8,8'-dicarboxaldehyde
  • 2,2'-bis[1,6,7-Trihydroxy-4-methyl-5-isopropyl-8-aldehydonaphthalene
  • 2,2'-bis[8-Formyl-1,6,7-trihydroxy-5-isopropyl-3-methylnaphthalene]