5-(3-Ethoxyphenyl)-picolinic acid

5-(4-Ethoxyphenyl)-picolinic acid

5-(4-Methoxyphenyl)-picolinic acid

5-(4-Methylthiophenyl)-picolinic acid

5-(3-Trifluoromethoxyphenyl)-picolinic acid

5-(2-Trifluoromethoxyphenyl)-picolinic acid