Illustrated Glossary of Organic Chemistry

Diastereomer: One of a set of stereoisomers that are not enantiomers.

Cis-1,2-dichlorocyclohexane

Trans-1,2-dichlorocyclohexane
  


Cis-1,2-dichlorocyclohexane

Trans-1,2-dichlorocyclohexane

The cis and trans stereoisomers of 1,2-dichlorocyclohexane are diastereomers.
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