ABSTRACT
Isomers are molecules that have the same chemical formula but differ in terms of the arrangement of atoms. Stereochemical isomers are isomers where the chemical formula is the same and the atoms are connected to other atoms by the same bonds, but the arrangement of those atoms in 3D space is different. This chapter looks at assigning absolute stereochemistry to chirality centres (atoms with four different groups attached to them) and identifying types of stereoisomers (enantiomers and diastereomers).
