In MkII this was called PPCHTeX, which works also with plain TeX and LaTeX.
There doesn’t seem to be any current documentation (all previous links were long dead), while chemistry support is still part of the distribution, but currently broken. (2023-10-01: part of the math upgrade, please wait until it becomes stable.)There are a few working examples in the [[manual:mkiv-publications.pdf|publications]] manual (chapter 10.2), i.e. in the file [https://source.contextgarden.net/doc/context/sources/general/manuals/publications/C6H6O.bib C6H6O.bib].
Some other links about chemistry in ConTeXt:
* [[manual:mkiv-publications.pdf|publications]] manual – use the bibliography database for chemicals
* [[Chromatograms]] macro
* [[manual:xchemml-p.pdf|ChemML]] ([[manual:xchemml-s.pdf|screen]]), [[MathML]] extension for chemistry.
== Using {{cmd|chemical}} ==