Enantiomer
One of a pair of molecules that are non-superimposable mirror images of each other, like left and right hands. Enantiomers have identical physical properties in a non-chiral environment but rotate plane-polarised light in opposite directions and can interact very differently with enzymes and receptors. They are labelled R and S, or by the sign of optical rotation.
Related terms
Chiral Purity
The extent to which a sample of a chiral compound consists of a single enantiomer, usually expressed as enant…
Polymorph
One of two or more crystalline forms of the same chemical compound that differ in the arrangement of molecule…
Drug Master File (DMF)
A Drug Master File is a confidential submission to a regulator, most often the US FDA, that describes how a s…
Deuterated Compound
A compound in which one or more hydrogen atoms have been replaced by deuterium, the stable hydrogen isotope w…
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