File Extension Search

.mol File Extension

Developer: Symyx Technologies
File type: MDL Molfile File
You're here because you have a file that has a file extension ending in .mol. Files with the file extension .mol can only be launched by certain applications. It's possible that .mol files are data files rather than documents or media, which means they're not meant to be viewed at all.

what is a .mol file?

An MDL Molfile file is stored in the MOL format and is affixed with MOL file extension and is used by Symyx and Accelrys. These MOL files are generally classified as data files that contain molecular data information, atom, bonds, coordinates and connectivity information in plain text format. In more technical terms, the molfile consists of three line header information, atom info in connection table, bond connections and types and sections. These singular molecular files are used in chemical informatics software systems or applications. There are two versions of the MDL Molfile namely V2000 and V3000. V200 version supports 999 atoms or bonds while V300 supports more than 999 atoms or bonds ideally used for proteins and polymers. The chemical MIME type of MDL Molfile is chemical/x-mdl-molfile. Aside from MOL format, MDL Molfiles also used SDF extension. The Avogadro software can be used in Microsoft Windows based systems, Linux and Mac OS to access and view MOL files.

how to open a .mol file?

Launch a .mol file, or any other file on your PC, by double-clicking it. If your file associations are set up correctly, the application that's meant to open your .mol file will open it. It's possible you may need to download or purchase the correct application. It's also possible that you have the correct application on your PC, but .mol files aren't yet associated with it. In this case, when you try to open a .mol file, you can tell Windows which application is the correct one for that file. From then on, opening a  .mol file will open the correct application. Click here to fix .mol file association errors

applications that open a .mol file

Avogadro, OpenEye Scientific VIDA, BioWisdom OmniViz

Avogadro, OpenEye Scientific VIDA, BioWisdom OmniViz

The Structure Data Format or SDF is a file extension used for storing information in a structured format and it can transfer data between database programs and uses fields that has equal length and value. Files that like the Molecular Design Limited MOL/SD files which uses file extensions such as .mol for Molecular, .sd for Structure-Data or .sdf for the Structure-Data-Format, are files which contain information and data for a single molecule (.mol) or any number of molecules (.sd, .sdf). The SDF file format is one of the most common standard used in exchanging information about chemicals. During QSAR Model Reports, generating and providing SDF files with information about training or test set molecules will be the completion of the report. Avogadro, OpenEye Scientific VIDA, and BioWisdom OmniViz are cross-platform programs that uses this type of file extension for platforms like Linux. Linux offers this programs for users who needs a molecular visualizer or editor through Avogadro, or for those who needs to view their docking results in 3D may use the OpenEye Scientific VIDA and for Linux users who needs information on complex data like Metadata and algorithms may use the BioWisdom OmniViz.
Avogadro, NISS PowerMV, Hyleos ChemFileBrowser, OpenEye Scientific VIDA, Advanced Chemistry Development ACD/ChemFolder, BioWisdom, OmniViz, CheD

Avogadro, NISS PowerMV, Hyleos ChemFileBrowser, OpenEye Scientific VIDA, Advanced Chemistry Development ACD/ChemFolder, BioWisdom, OmniViz, CheD

The SDF file extension uses the .sdf file format, a type of database file, is used for storing data using a structured format. In storing values, the file extension uses fields of fixed lengths, and it is commonly used for transferring data between applications. It can import and export a variety of database and programs used in data analysis. Avogadro, NISS PowerMV, Hyleos ChemFileBrowser, OpenEye Scientific VIDA, Advanced Chemistry Development ACD/ChemFolder, BioWisdom, OmniViz, CheD are programs that use SDF file extension in the Windows platform. Avogadro is a molecular visualizer and editor used in computational chemistry, bioinformatics, materials science and molecular modeling. NISS PowerMV is software used in statistical analysis, molecular viewing, descriptor generation, and similarity search. The Hyleos ChemFileBrowser is a software for Win32 used in exchanging and storing compounds and its data. OpenEye Scientific VIDA lets users view docking results in a specialized 3D docking view and chemistry aware spreadsheet. The Advanced Chemistry Development ACD/ChemFolder creates and manages databases that contain chemical structures and data, reports, reactions and others to collect chemical knowledge used for meeting specific goals and needs of users. BioWisdom is a database that contains research and development news for the biopharmaceutical field. OmniViz is an analytics engine that collects Metadata, algorithms and visual summaries for research and insight on complex data. And CheD is a Chemical Database Management system that stores, views, and search for chemical structures, infrared, nuclear magnetic resonance, and mass spectra which is used in chemical plants, universities, research centers


The Avogadro software is used in computational chemistry, molecular modeling, bioinformatics, material science and other sciences related to it. With its rendering and plugin architecture, it functions as a molecular editor and provides visualizer designs. This software is free and an open source which is available under GNU GPL. It has international translations, pages can be translated to French, German, Italian, Spanish, Chinese and Russian, the Avogadro team is still working on incorporating more language translations. This program is built for students and advanced researchers and supports computation and multi-threaded rendering. Developers are also welcome, with the program's plugin architecture that includes, tools for rendering and interactivity, commands and Python scripts. Avogadro features an Open Babel, it is a chemical toolbox with all the languages of chemical data. It is a open, collaborative language which means that anyone is welcome to search, convert, analyze, or store data from molecular modeling, chemistry, solid-state materials and biochemistry. the Open Babel has 110 chemical File formats and has been downloaded for more than 164,000 times.
Avogadro for Mac

Avogadro for Mac

Avogadro is a molecule builder and editor that offers flexible rendering and plugin architecture for developers. The software supports interactive building of molecules with the use integrated molecular mechanics and fragment database. The software provides GAMESS or Gaussian calculations input generation. It uses crystallographic unit cells, isosurfaces and orbitals from Gaussian cubes and OpenDX for visualization. For Mac platforms, the system requirement fo Avogadro is CMake 2.4.7 or later, Qt 4.4.0 or later, OpenBabel 2.2.0 or later and Eigen 2.0.0 Beta 3 or later. Avogadro is a molecular editor developed to help in computational chemistry, bioinformatics or materials science Its main function is for molecular editing and visualization that allows users to make their own plugins and create their own scripts to be utilized in various commands, tools and rendering. The latest version features a new crystal library which has more than 480 files in 20 types of crystals. It includes all kinds of elements, common oxides, sulfides III-V semiconductors and others, and the most common structure types.
Avogadro for Microsoft Windows

Avogadro for Microsoft Windows

Avogadro is a molecular editor designed for use in computational chemistry, molecular modeling, bioinformatics, materials science and related areas. It works for different platforms for 3D molecular manipulation and can be easily extended and developed with the use of plugins. In the recent version, developers claimed that bugs have been fixed like the compilation for Windows. It resolved the issue on the new versions of the SIP, can now automatically import Avogadro in the Python terminal, adjustments were made on the new version of Open Babel, issosurface may now align to molecules in all cases, the bugs in the bounds for cubes was already fixed. There is additional picking support in wireframe that enables editing of atoms using this mode, crashes were fixed in drawing with adjust hydrogen on, added the missing entries in the GAMES input dialog, the NWChem input generator was fixed and updates are added when atoms are added, removed or updated. They also fixed the autobonding in animations when rendering in POV-Ray for video, removed old CMaked codes that are no longer needed, and made linguist only optional for Avogadro builds.

a word of warning

Be careful not to rename the extension on .mol files, or any other files. This will not change the file type. Only special conversion software can change a file from one file type to another.

what is a file extension?

A file extension is the set of three or four characters at the end of a filename; in this case, .mol. File extensions tell you what type of file it is, and tell Windows what programs can open it. Windows often associates a default program to each file extension, so that when you double-click the file, the program launches automatically. When that program is no longer on your PC, you can sometimes get an error when you try to open the associated file.

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