Benzoylurea compounds

A compound of the formula ##STR12## wherein X, X.sup.1, X.sup.2 and X.sup.3 each is hydrogen or fluorine, R is a moiety --C(O)OR.sup.1, or --NR.sup.2 R.sup.3, in which R.sup.1 and R.sup.2 each is optionally substituted alkyl, optionally substituted cycloalkyl or optionally substituted phenyl, R.sup.3 is optionally substituted alkyl, optionally substituted cycloalkyl or optionally substituted phenyl, or is a moiety --C(O)R.sup.4, --C(O)OR.sup.4 or --SO.sub.2 R.sup.4 wherein R.sup.4 is optionally substituted alkyl, optionally substituted cycloalkyl or optionally substituted phenyl, or R.sup.2 and R.sup.3 together is optionally substituted alkylene of four or five carbon atoms, in each case the optional substituents on alkyl, cycloalkyl and alkylene being selected from halogen, alkoxy, alkoxycarbonyl, haloalkoxycarbonyl, alkylcarbonyl, haloalkylcarbonyl, alkylsulphonyl and haloalkylsulphonyl, and the optional substituents on phenyl being selected from these substituents and also alkyl, haloalkyl, cyano and nitro, wherein each alkyl and haloalkyl group contains from one to six carbon atoms.