| Enantiomers exist when the molecules of the substances are mirror images but are not superimposable upon one another. |
| The easiest way to tell if the mirror image is superimposable or not and superposable is to find the stereochemistry at the stereocenter. |
| Any object that is not superimposable onto its mirror image is chiral. |
| The crystal structure of hagfish insulin has also been determined and it is virtually superimposable with porcine insulin. |
| These two sets of results are so closely similar they are virtually superimposable on each other. |
| Diastereomers, on the other hand, are not superimposable and also are not mirror images. |
