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Chemistry

Stereoselective Synthesis of Chiral Pharmaceuticals

Quick fact

The drug thalidomide was sold as a mixture of two enantiomers: one helped morning sickness, the other caused birth defects. This tragedy highlighted why creating pure enantiomers is crucial.

Why this is interesting

Imagine two molecules that are mirror images, like your left and right hands—one cures a disease, the other causes severe side effects. How do chemists ensure they make only the one that heals?