In vivo evidence of positive inotropism of EMD 57033 through calcium sensitization

The previous separation of the racemic cardiotonic thiadiazinone derivative EMD 53998 yielded two enantiomers with different pharmacologic properties: EMD 57,033, a potent Ca2+ sensitizer with some residual phosphodiesterase III (PDE III) inhibition, and EMD 57,439, a pure PDE III inhibitor. Althoug...

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