Patent ID: 7524973

Claim:
A compound of formula I in which either R1 is hydrogen, chlorine, bromine or methyl, R2 is —CH 2 —C(O)—O-A-O—NO 2 , in which A is 2-7C-alkylene, R3 is hydrogen, halogen, 1-5C-alkyl, 1-5C-alkoxy or trifluoromethyl, R4 has one of the meanings of R3, R5 is hydrogen, halogen or 1-5C-alkyl, or R1 is —CH 2 —C(O)—O-A-O—NO 2 , in which A is 2-7C-alkylene, R2 is hydrogen, chlorine, bromine or methyl, R3 is hydrogen, halogen, 1-5C-alkyl, 1-5C-alkoxy or trifluoromethyl, R4 has one of the meanings of R3, R5 is hydrogen, halogen or 1-5C-alkyl, or a hydrate, solvate, salt, hydrate of a salt or solvate of a salt thereof.