Lactofen is a complex ester of acifluorfen and is a nitrophenyl ether selective herbicide. It is used in postemergence applications to certain crops which are resistant to its action. The name "Lactofen" is approved by the American National Standards Institute and the Weed Science Society of America, and is also approved in China (乳氟禾草灵). It has no ISO common name. Lactofen is applied as a foliar spray and is commonly used to control broadleaved weeds in soybean, cereals, potatoes and peanuts. It may be combined with oil or fertilizer adjuvants and surfactants. Some formulations include solvents such as xylenes and cumene. Lactofen is available in solid form or as an emulsifiable concentrate under the trade name COBRA.