Patent ID: 7301049

Claim:
A compound represented by the formula: wherein: R 1 is selected from aryl or alkoxy-substituted aryl, or aryloxy or substituted aryloxy; R 2 is selected from hydrogen, halogen, alkyl or substituted alkyl, alkoxy or substituted alkoxy, aryl or substituted aryl, aryloxy or substituted aryloxy, amino or substituted amino or a nitro group; R 3 is selected from hydrogen, alkoxy or substituted alkoxy, aryl or substituted aryl, aryloxy or substituted aryloxy, amino or substituted amino, or an unsubstituted or substituted heterocyclic group; R 4 is an alkyl group substituted with one or more halogen substituents; R 5 is selected from hydrogen, halogen, alkyl or substituted alkyl, alkoxy or substituted alkoxy, aryl or substituted aryl, aryloxy or substituted aryloxy, amino or substituted amino, a nitro group or an unsubstituted or substituted heterocyclic group; and, R 6 is selected from hydrogen, halogen, alkyl or substituted alkyl, alkoxy or substituted alkoxy, aryl or substituted aryl, aryloxy or substituted aryloxy, or amino or substituted amino, or an unsubstituted or substituted heterocyclic group.