| 摘要 |
Compounds of the formula <IMAGE> wherein R1 and R2, which may be identical to or different from each other, are each fluorine, chlorine, bromine or trifluoromethyl, and R3 is alkyl of 1 to 4 carbon atoms, alkenyl of 2 to 4 carbon atoms, cyclopropylmethyl, benzyl or thienyl-2-methyl, and non-toxic, pharmacologically acceptable acid addition salts thereof. The compounds as well as their salts are useful as bradycardiacs. |
