Patent ID: 7101887

Claim:
A composition comprising a compound of the formula: or a pharmaceutically acceptable acid salt thereof, and a pharmaceutically acceptable excipient, wherein: R 1 is halogen or C 1 –C 4 alkyl; R 2 represents halogen, C 1 –C 4 alkyl, C 1 –C 4 alkoxy, C 1 –C 4 alkylthio, hydroxy, amino, mono C 1 –C 4 alkylamino or di C 1 –C 4 alkylamino, R 3 represesents hydrogen, halogen, C 1 –C 4 alkyl, C 1 –C 4 alkoxy, C 1 –C 4 alkylthio, hydroxy, amino, mono C 1 –C 4 alkylamino or di C 1 –C 4 alkylamino, with the proviso that R 2 and R 3 may not be 2-isopropoxyl and hydrogen respectively when R 1 is bromo.