Convert a Marvin MRV file to MOL
Free, no sign-up. It runs in your browser on Athanor’s own engine, and your structures never leave your device.
Marvin MRV in
or paste it
MOL file (V2000) out
How to do it
Choose a file, or paste it.
Athanor’s own engine reads it in your browser and writes the new format.
Download the result. It is read back and checked first.
How it works
Read a Marvin .mrv file and get the structure as a MOL file that RDKit, Open Babel and most programs read. Athanor reads and writes Marvin’s MRV format with its own engine, the one in the Athanor app, so nothing is uploaded and you need no Marvin license. After converting, it reads the result back and compares the structure by its InChIKey.
Measured on November 12, 2026 over all 1,128 structures in Athanor’s compound library, each written as MRV and read back: all 1,128 came back as the same structure. Marvin JS can no longer be bought after December 31, 2026; see the Marvin JS alternative for moving an embedded editor.
Questions
Related tools
Do way more cool things with Athanor, for free.
Windows 10 and 11 Updates itself from the Store
Runs in your browser. No account needed to draw.