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Three-Dimensional Representations

Assigning Priorities

Determining Stereochemical Relationships

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Definitions: Examples of Diastereomers

Consider the following pairs of molecules and determine whether or not they are diastereomers. Click on the link below each pair to check your answer.

These molecules are diastereomers. These molecules are not mirror images of one another, and they are non-superimposable, which can be seen by flipping one of the molecules 180 degrees, as shown below. The stereochemistry is the same at the stereocenter attached to the methyl group and is different at the other stereocenter attached to the chlorine.

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