Page tree
  • Checker searches for valence errors.
  • Fixer offers removing explicit hydrogens if applicable (fixvalence).

Example :

Valence Error Checker (valenceerror)Warning:Fix
Fix Valence (fixvalence)
Detect Valence Errorex_valence_chno error
ex_valence_chnot available
Detect Valence Error:
Allow traditional N representation
ex_valence_chnot available

Note : Valence errors with no removable hydrogens have to be corrected manually.

Current limitation: If an R group definition contains an S group with valence error inside, the checker reports about the problem but no fixer is applied (even if the valence error could be eliminated with H removal).