Chiral molecules exist in two forms, called enantiomers, which are mirror images of each other and non-superimposable—much like a pair of hands. While they share most chemical and physical properties, enantiomers can have adverse effects in (bio)chemical phenomena. For example, a protein or enzyme may only bind one enantiomeric form of a target molecule. Consequently, identification and control of chirality is often key to designing (bio)chemical compounds, e.g., in the food, fragrance, and pharmaceutical industries.
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Source: Phys.org