Well I haven't maintained my own MediaWiki site in almost six months, so not really, but you know this feature wouldn't just be helpful for me if I were still using MW, but it would also be useful for editors of the various Wikipedias as they cover topics in Chemistry.

@Kghbln Yeah that was me. I am almost begging for someone to make it an official repo. I don't understand PHP well enough to do any tweaking of this extension myself, so please would someone do this.