$3.9 billion was wiped off Sepracor's market capitalization as investors called into question the entire utility of single enantiomers as a means of improving drugs and managing product life cycles.
The results are important because, while the left- and right-handed versions, or enantiomers, of chemical compounds have identical chemical properties, they differ in how they react in the human body.
Nearly 56% of all modern drugs and medicine are chiral in nature, and about 90% of those are a mixture containing equal amounts of two enantiomers of a chiral compound. Researchers often face the ...