| 摘要 |
A pyridizinone derivative of the formula I <IMAGE> wherein R is F, Cl, Br, I or R1R2N, R1 and R2 are each H, C1-4-alkyl or benzyl, R3, R4 and R5 are each H or C1-4-alkyl and wherein it is only possible for R to be benzylamino, R3 to be CH3 and R4 to H at the same time if R5 is alkyl, and salts thereof display positive inotropic properties and vasodilative properties and can be used, in particular, as intermediate products in the production of other pharmaceutical agents.
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