Athanor by arbastro
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How to open structure files

Press Ctrl+O (File › Open a file) and pick the file. An SDF with three compounds puts all three on the page, each named from the file.

On a Mac, Ctrl is Cmd.

Steps

  1. Press Ctrl+O, or choose Main menu › File › Open a file.

  2. Pick the file, for example three-drugs.sdf with aspirin, caffeine and ibuprofen.

  3. Each structure is placed on the page and listed in Layers with the name from the file.

    Aspirin, caffeine and ibuprofen opened from one SDF, each named in Layers.Aspirin, caffeine and ibuprofen opened from one SDF, each named in Layers.

For ChemDraw files, see How to open ChemDraw files. Every format Athanor writes is in Supported formats.

Files and formatsSupported file formatsExport (Ctrl+Shift+E) writes images (PNG, SVG, PDF, TIFF, EMF, EPS, JPEG, WMF), ChemDraw CDXML and CDX, chemistry files (MOL, SDF, SMILES, InChI, InChIKey, CML, Marvin, RXN, RDF) and computation files (XYZ, PDB, MOL2, Gaussian, ORCA).Switching from ChemDrawHow to open CDX and CDXML filesPress Ctrl+O (Open a file) and choose the .cdx or .cdxml file, or drag it onto the Athanor window. Structures stay structures, so you can keep editing them.

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Last updated Nov 12, 2026