RXN file extension - MDL chemical reaction format file
What is rxn file? How to open rxn files?
File type specification:
The RXN file extension is used for a specialized chemistry and biochemistry format used to store information about chemical reatctions.
MIME: chemical/x-mdl-rxnfile, chemical/x-mdl-rxn
The MDL chemical reaction format seems to be obsolete without support from developer or producer.