- Distomer
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The distomer is an enantiomer in an optically active compound. It is often the case that only a single one of the enantiomers contains all of the wanted bioactivity, the distomer is often less active, has no disired activity or may even be toxic.[1]
In some cases the eudysmic ratio is so high that it is desired to separate out the two enantiomers instead of leaving it as a racemic product.
It is often possible that the distomer is not simply completely inactive and actually antagonizes the effects of the eutomer.
References
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