chemfig – Draw molecules with easy syntax

The package provides the command \chemfig{<code>}, which draws molecules using the TikZ package. The <code> argument provides instructions for the drawing operation.

While the diagrams produced are essentially 2-dimensional, the package supports many of the conventional notations for illustrating the 3-dimensional layout of a molecule.

The package uses TikZ for its actual drawing operations.

Sources	/macros/generic/chemfig
Documentation	README Package documentation (English) Package documentation (French)
Version	1.71
Licenses	The LaTeX Project Public License 1.3c
Copyright	2010–2025 Christian Tellechea
Maintainer	Christian Tellechea
Contained in	TeX Live as chemfig MiKTeX as chemfig
Topics	PGF TikZ Chemistry Diagrams Graphics Generic Macros e-TeX

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