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A cross of straight lines with the vertical bonds going back.
Also known as: Fischer diagram, Fischer formula, Sugar cross diagram
In a Fischer projection horizontal bonds come towards the viewer and vertical bonds go away, and that convention is the whole of the drawing — rotating it by ninety degrees inverts the configuration. It was designed for sugars and it is unsafe to read as an ordinary structural formula.
Denotes a two-dimensional representation in which horizontal bonds project towards the viewer and vertical bonds away from it.
Contexts: Laboratory
Inverts the configuration if rotated by ninety degrees in the plane, which is why the drawing must never be turned.
Contexts: Laboratory
Was devised by Emil Fischer for carbohydrate chemistry and remains standard for sugars and amino acids.
Contexts: Laboratory
A vertical backbone line crossed by short horizontal lines at each stereocentre, forming a ladder of crosses.