An rd file extension is related to the Reaction-data file format introduced by MDL Information Systems.
There is one other file type using
the RD file extension!
.rd - R document file
RD file extension - Reaction-data file
What is rd file? How to open rd files?
File type specification:
The rd file extension is used for some sort of data format used in chemistry, developed by MDL Information Systems.
The rd file contains saved chemical reaction data (reaction connection table).
MIME types:
chemical/x-mdl-rdfile
This rd file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.