Method of representing the three-dimensional structures of molecule s on a page, devised by
By convention, horizontal lines represent bonds projecting from the plane of the paper toward the viewer, and vertical lines represent bonds projecting away from the viewer. Fischer projections are a convenient way to depict chiral molecules (see {{link=optical activity">optical activity ) and distinguish between pairs of enantiomers (see racemate ). They are most often used to depict isomer s of the sugar s. See also chemical formula .