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The SKC format of ISIS/Draw is imported and exported by Marvin. Most properties of atoms, bonds, groups (R-group and S-groups), query structures and reactions are supported.

Export and Import

The main features:

  • Chemical structures (atom properties, labels, bond types)
  • Formatted text
  • R-groups
  • S-groups
  • Atom and bond query properties
  • Graphical objects (rectangle, ellipse, graphical brackets)
  • Reactions

Read the detailed import and export list.

Code: skc

Extension: .skc


  • Some graphical object or objects properties are not available in Marvin (e.g. graphics arc, line style of graphical objects and underlined text).
  • Graphical brackets are not supported by ISIS/Draw, thus all brackets are imported as S-groups.