Thiamethoxam is a broad-spectrum neonicotinoid insecticide. It was developed by Syngenta, which had to settle a patent suit by Bayer before marketing it. Thiamethoxam acts by direct contact with insects and by insects' consumption of treated plants. Recently, M. Henry and colleagues at the French agency that combines the functions of FDA, EPA, and OSHA found that thiamethoxam harms honeybees. For this reason, it may soon be .
MOTW update:聽June 03, 2019
Clothianidin and thiamethoxam were the Molecules of the Week for February 17, 2014听补苍诲 October 15, 2012, respectively. Both are neonicotinoid insecticides that during the past decade have come under regulatory pressure because they are toxic to honeybees. Finally, this past week, the US Environmental Protection Agency canceled the registrations for 12 formulations that contain one or the other of these pesticides.
MOTW update:聽May 14, 2018
Clothianidin, imidacloprid, and thiamethoxam聽were the Molecules of the Week for February 17, 2014, August 25, 2014, and October 15, 2012, respectively. All three are neonicotinoid pesticides, and all three have been found to contribute to the worldwide die-off of honeybees. Use of these pesticides has been gradually restricted during the past several years, but now the European Union is about to . Will the United States follow suit?
MOTW update:
February 17, 2020
罢丑颈补尘别迟丑辞虫补尘听is a nicotinoid pesticide that pose neurotoxic risks to humans and wildlife, especially honeybees. Nonetheless, in an interim decision announced in January, the US Environmental Protection Agency , with some restrictions yet to be announced. This action is in contrast to the European Commission鈥檚 2018 ban on these and other nicotinoids for outdoor use.
, the most authoritative and comprehensive source for chemical information.
Molecule of the Week needs your suggestions!
If your favorite molecule is not in our聽archive, please send us a message. The molecule can be notable for its current or historical importance or for any quirky reason. Thank you!
Stay Ahead of the Chemistry Curve
Learn how ACS can help you stay ahead in the world of chemistry.
