Fischer projection (cross) formula:
- In this representation, a three dimensional molecule is projected on plane of paper.
- Fischer projection formula can be drawn by visualizing the molecule with its main carbon chain vertical.
- Each carbon on the vertical chain is represented by a cross. By convention, the horizontal lines of the cross represent bonds projecting up from the carbon and the vertical lines represent the bonds going below the carbon.
Fischer projection formula of a molecule along with its wedge formula is represented below:
[Note: Fischer projection formula is more commonly used in carbohydrate chemistry.]
