The chembst package is a collection of advanced BibTeX style files suitable for publications in chemistry journals. Currently, style files for journals published by the American Chemical Society, Wiley-VCH and The Royal Society of Chemistry are available. The style file support advanced features like automatic formatting of errata or creating an appropriate entry for publications in Angewandte Chemie where both English and German should be cited simultaneously. This material is subject to the LaTeX Project Public License. See http://www.ctan.org/tex-archive/help/Catalogue/licenses.lppl.html for the details of that license.