For instance, all living things exclusively use the right - handed form of the sugar ribose (the backbone of DNA), and many chiral pharmaceutical
chemicals are only effective in one
handedness; in the other, they can be toxic.
The second case study was similar to the first, but involved predicting the «
handedness» of
chemicals made when a catalyst was used to convert a double carbon - carbon bond to a single carbon - carbon bond in a
chemical named diarylalkene.