2-Halo-pyridine of the formula: ##STR1## wherein X is Cl or Br; Ar is phenyl or substituted phenyl of the formula ##STR2## in which n is 0, 1, 2 or 3; R is C.sub.1-4 alkyl, C.sub.1-4 alkoxy, phenoxy, C.sub.1-4 alkylthio, halogen, OH or C.sub.6 H.sub.5 ; or a pharmaceutically acceptable salt thereof.
公式为:##STR1## 其中X为Cl或Br;Ar为苯或公式##STR2##中的取代苯,其中n为0、1、2或3;R为C.sub.1-4烷基、C.sub.1-4烷氧基、苯氧基、C.sub.1-4烷
硫基、卤素、OH或C.sub.6 H.sub.5;或其药学上可接受的盐。