"For example, substituents include halogen, especially chloro, ???OH, ???CF3, ???NO2, ???NH2, ???NH(C1-C6alkyl), ???N(C1-C6alkyl)2, C1-C6 alkyl, ???OC1-C6 alkyl, ???CN, ???CF3, ???CO2H, and ???CO2C1-C6 alkyl." . . . .