Mirror-image ratios in meteoritic sugar derivatives

Researchers analyzed enantiomers, two nonsuperimposable mirror image molecules labeled "D" and "L," of organic compounds related to sugars from seven carbonaceous meteorites, and report that a number of rare and common sugar acids from several of the meteorites contain large excesses of D-enantiomers, a feature common in most biological sugars and sugar derivatives from Earth, findings that suggest that meteoritic compounds may have influenced the enantiomer composition of biological polymers on Earth. - Read at PNAS.org

Article #16-03030: “Enantiomer excesses of rare and common sugar derivatives in carbonaceous meteorites,” by George Cooper and Andro C. Rios.