1. Cotton has gossypol , a toxin that makes it inedible. 2. These include beta carotene, beta ionone and gossypol . 3. Other researchers are investigating the anticancer properties of gossypol . 4. Researchers have suggested gossypol might make a good noninvasive alternative to surgical vasectomy. 5. Researchers then tried gossypol in a vaginal cream. 6. However, gossypol also had serious flaws. 7. In the 1970s, the Chinese government began researching the use of gossypol as a contraceptive. 8. The same study showed taking potassium supplements during gossypol treatment did not prevent hypokalemia in primates. 9. This plant contains the chemical gossypol , which reduces its susceptibility to insect and fungal damage. 10. Gossypol is a phenolic aldehyde that permeates cells and acts as an inhibitor for several dehydrogenase enzymes.