ChemDraw sketch file - CDX, CDXML

    The cdx format of CambridgeSoft's ChemDraw is imported and exported by Marvin. The import of cdxml format is supported, but export isn't.

    Code: cdx, cdxml

    Extension: .cdx, .cdxml


    Supported features

    • [ Atom properties: ]( The following properties are supported: charge, isotope, substituents, free sites, unsaturation, reaction stereo, enhanced stereochemistry, radical, ring bond count.

    • Element: The 'Element' type node is read as a single atom. For the supported properties see the supported Atom properties list.

    • Element List: Element Lists are read as Atom List (or not list). For the supported properties see the supported node properties list.

    • Label: Labels are converted to an S-group and imported in its contracted state.

    • Nickname: Nicknames are converted to an S-group and imported in its contracted state.

    • Bond types: Single bonds, double bonds, query bonds, topology, reaction centers are imported. See details.

    • Fragment

    • Generic Label: Generic Labels are read as Generic query atoms.

    • Attachment Points: Attachment Points are imported.

    • Reaction arrows: All types of arrows are imported, but only one arrow per file.

    • Bracketed groups: All groups are imported.

    • Alternative Group: Alternative Groups are read as R-groups, up to two connections per R-group.

    • Anonymous Alternative Group: An Anonymous Alternative Group is imported as R-group and is assigned the R-group number n+1 where n is the largest R-group number in the file.

    • R-logic

    • Link Node: Link Node is read as Link Node.

    • Variable Attachment and Multi-Center Attachment: These are imported as Multicenter S-groups.

    • Text Box: Marvin reads the position and the formatted text.

    • Basic Graphic Objects: Ellipses, rectangles and some of the symbols are read. See details.

    • Graphic Objects: Tables and TLC plate drawings are imported as graphics. See details.

    • Formatted text in atom labels: supported since 6.2.0.

    Not supported features:

    • ElementListNickname

    • ElectronFlow arrow

    • Complex graphical objects (e.g. laboratory equipment drawings, biological drawings)


    • Only ASCII characters are imported.

    • R-logic import is supported, export not yet.


    Supported features