## Wikipedia - Proiezione (chimica) (it) Wikipedia - 投影式 (ja) projection formula

Also contains definition of: stereoformula
https://doi.org/10.1351/goldbook.P04873
A formal two-dimensional representation of a three-dimensional molecular structure obtained by projection of bonds (symbolized as lines) onto a plane with or without the designation of the positions of relevant atoms by their chemical symbols. A projection formula which indicates the spatial arrangement of bonds is called a @[email protected] or stereoformula. Examples of stereoformulae are @[email protected], @[email protected], @[email protected], @[email protected] and @[email protected]