Clomazone is an agricultural herbicide, and has been the active ingredient of products named "Command" and "Commence".

The molecule consists of a 2-chlorobenzyl group bound to a N-O heterocycle called isoxazolidinone.

It is used for broadleaf weed control in several crops, including soybeans, peas, maize, oilseed rape, sugar cane, cassava, pumpkins and tobacco.

Clomazone undergoes biological degradation, exhibiting a soil half life of one to four months.

[2] Adsorption of the herbicide to soil solids slows degradation and volatilization.