What is a .MOL file?
MOL describes a single molecule’s atoms and bonds. Used by chemistry software.
- Did you know
- The MDL Molfile has been a core chemistry format since the 1980s.
- The Molfile was introduced by MDL Information Systems in 1979 and centres on a connection table describing a molecule’s atoms and bonds.
- Its widely used V2000 layout caps a structure at 999 atoms, so larger molecules need the extended V3000 variant.
- What Analyser reads
- Open scientific, medical and engineering files: DICOM scans, NIfTI brain volumes, Garmin FIT/TCX activities, FITS astronomy frames, FASTA/FASTQ sequences, chemistry structures (MOL/SDF/MOL2/CIF/XYZ), Gerber/Excellon PCB data, SPICE netlists, EDF/BDF biosignals, JCAMP-DX spectra, SPSS/Stata/SAS datasets and VTK/ParaView meshes - metadata extracted entirely in-browser.
- Depth of analysis
- .MOL is an identification-grade format: Analyser recognises it from its bytes and decodes the header metadata it carries, rather than opening it in a full viewer. Formats that do get a full viewer are marked "Full" on the formats page.
- Open a .MOL file
- Drag a .MOL file onto the Analyser home page (or tap to pick one). It is identified entirely in your browser - nothing is uploaded, there is no account, and it works offline once installed.