Hi Greg and RDKiters, I'm doing some functional group (FG) substructure matching in some molecules and I noticed that the SMARTS pattern used to define the aldehyde FG will identify all aldehydes larger than Acetalhyde but fails to identify formaldehyde as part of the family.
Is this something that should happen? Attached is an ipython notebook showing this behaviour. Best, Christos Christos Kannas Researcher Ph.D Student Mob (UK): +44 (0) 7447700937 Mob (Cyprus): +357 99530608 [image: View Christos Kannas's profile on LinkedIn] <http://cy.linkedin.com/in/christoskannas>
Aldehyde FG.ipynb
Description: Binary data
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