Atom Menu

    This menu contains all atom related properties such as charge, atom radicals, maps, and many more.

    Stereo > R/S > Off Removes the absolute stereo configuration from a chiral atom along with the marking wedge bond.
    Stereo > R/S > R Sets the absolute stereo configuration on a chiral atom to R, marking it with wedge bond.
    Stereo > R/S > S Sets the absolute stereo configuration on a chiral atom to S, marking it with wedge bond.
    Stereo > Reaction > Off Sets the stereo configuration of the atom not to be considered during the reaction.
    Stereo > Reaction > Inversion Sets the stereo configuration of the atom to be inverted during the reaction.
    Stereo > Reaction > Retention Sets the stereo configuration of the atom to be retained during the reaction.
    Stereo > Enhanced See Stereo documentation for details.
    Charge Allows you to change the charge of any atom between [-128, 128]. The number of implicit hydrogens will be adjusted if possible to accommodate the new charge. Valence errors will be highlighted in red.
    Valence Allows you to change the valence of any atom between [0, 8].
    Radical > Off Removes the radical designation from an atom.
    Radical > Monovalent Sets Monovalent radical center.
    Radical > Divalent Sets Divalent radical center.
    Radical > Divalent Singlet Sets Divalent radical center with singlet electronic configuration.
    Radical > Divalent Triplet Sets Divalent radical center with triplet electronic configuration.
    Radical > Trivalent Sets Trivalent radical center.
    Radical > Trivalent Doublet Sets Trivalent radical center with doublet electronic configuration.
    Radical > Trivalent Quartet Sets Trivalent radical center with quartet electronic configuration.
    Isotope Sets or changes the isotope number of the selected element, or resets the default atom (no isotope) when it is set to Off.
    Map Sets map labels/identifiers on the selected atoms that do not change while altering the molecule. They are useful when dealing with reactions, and can be saved in SMILES and MDL formats.
    R-group Changes the selected atom to an R-group label. R-groups symbolize alternative substituents.
    R-group Attachment The selected atom becomes the attachment point for the substituent.
    R-group Attachment Order Changes the order (numbering) of the attachment points.
    Link Node Specifies query structures containing rings or chains of variable size.
    Periodic Table Shows Periodic Table and query/atom property drawing window.
    Edit Properties Specifies the property of an atom.
    Add S-group attachment Creates an attachment point on the selected atom of an S-group.
    Remove S-group attachment Removes the highest-numbered attachment point from an atom of an S-group.