abstract |
Compounds of the formula: <IMAGE> wherein: Y is 2,6-dimethylphenyl, 2,5-dimethylphenyl, 3,5-dimethylphenyl, 2-chloro-6-methylphenyl, or 5-chloro-2-methylphenyl; and X is methyl, ethyl, propyl, isopropyl, n-butyl, or isobutyl; or a non-toxic, pharmaceutically acceptable acid addition salt thereof; possess anti-arrhythmic activity. |