Browdy and Neimark
Urea derivatives and highly selective herbicidal compositions containing the same
 There are provided novel urea derivatives of the general formula ##STR1## wherein X, n, A and R are defined in the description; processes for preparing the derivatives and herbicidal composition containing as active ingredient the derivative. The derivatives have highly selective herbicidal activities. 
Chugai Seiyaku Kabushiki Kaisha
C A C
C07C A01N C07C
inventional inventional inventional
Masaki Yasushi Masanori Tetsuo Hiroshi
Takeuchi Murakami Okada Takematsu Sugiyama