Abbreviated Group
Absent Chiral Flag
Absolute Stereo Configuration
Alias
Aromaticity Error
Atom Map
Atom Query Property
Atom Value
Atropisomer (deprecated)
Attached Data
Bond Angle
Bond Length
Bond Topology
Brackets
Chiral Flag
Chiral Flag Error
Circular R-group Reference
Coordination System Error
Covalent Counterion
Crossed Double Bond
Double Bond Stereo Error
Empty Structure
Explicit Hydrogen
Explicit Lone Pairs
EZ Double Bond
Incorrect Tetrahedral Stereo
Isotope
Metallocene Error
Missing Atom Map
Missing R-group
Molecule Charge
Multicenter
Multicomponent
Multiple Stereocenter
Non-standard Wedge Scheme
Non-stereo Wedge Bond
OCR Error
Overlapping Atoms
Overlapping Bonds
Pseudo Atom
Query Atom
Query Bond
Racemate
Radical
Rare Element
Reacting Center Bond Mark
Reaction Map Error
Relative Stereo
Ring Strain Error
R-atom
R-group Attachment Error
R-group Bridge Error
Solvent
Star Atom
Stereo-Care Box
Stereo Inversion Retention Mark
Straight Double Bond
Substructure
Three Dimension (3D)
Unbalanced Reaction
Unused R-group
Valence Error
Valence Property
Wiggly Bond
Wiggly Double Bond
R-group Reference Error
Wedge Error
Corresponding Fixers are indicated in the description of each checker. In case there are more than one fixers for a given checker, they will be listed in a preset logical order of priority.