What are isomers?
Have the same molecular formula but different structures
What are constitutional isomers?
Differ in the order of attachment of atoms
What are enantiomers?
Nonsuperimposable mirror images
What are stereoisomers?
Atoms are connected in the same order but differ in spatial arrangement
What are diasterioisomers?
Isomers that are not mirror images
What are epimers?
Differ at one of several asymmetric carbon atoms