Substituted N-benzoylanthranilic acid derivatives and their anhydro compounds

A compound of the formula ##STR188## a compound of the formula ##STR189## where R.sup.1 is a substituted phenyl of the formula ##STR190## where R.sup.3, R.sup.4 and R.sup.5 are each, independently of one another, hydrogen, halogen, nitro, cyano or carboxyl, or alkyl, haloalkyl, alkoxy, haloalkoxy, alkylmercapto, haloalkylmercapto, alkylsulfinyl or alkylsulfonyl each of 1 to 4 carbon atoms, or R.sup.1 is heteroaryl of the formula ##STR191## R.sup.2 is hydrogen, nitro, cyano or halogen, X is hydrogen, halogen, nitro or cyano, or is alkyl, haloalkyl, alkoxy, haloalkoxy, haloalkylmercapto or alkylmercapto, each of 1 to 4 carbon atoms, and

• Y is --OR.sup.6 or ##STR192## where R.sup.6 is hydrogen or alkyl, alkenyl or alkynyl each of up to 4 carbon atoms, or one equivalent of an alkaline earth metal cation or of an alkali metal cation or of an ammonium ion which is unsubstituted or substituted by alkyls of 1 to 4 carbon atoms, and
• R.sup.7 and R.sup.8 independently of one another are hydrogen or alkyl of 1 to 4 carbon atoms.