Archive for December 6th, 2019

The (+) in D-(+)-glyceraldehyde means it has a positive optical rotation? Wrong!

Friday, December 6th, 2019

Text books often show the following diagram, famously consolidated over many years by Emil Fischer from 1891 onwards. At the top sits D-(+)-glyceraldehyde, to which all the monosaccharides below are connected by painstaking chemical transformations.