Markush structures are not indexed but it can be interesting to use the Markush drawing as a drawing search mode.
Let’s take the example of a patent discussing ‘aspirin’. Indexation of the Chemistry Module will transform the word aspirin into the structure below.
It is possible for a user to draw a Markush structure (see below) to search a family of structures that include aspirin and find all the resulting documents (including aspirin).
The Markush drawing above can be drawn to search 6 molecules at once (removing symmetric compounds), one of which being aspirin.