Made to order · any molecule · delivered worldwide
CAS number to 3D molecule model, ready to print
Send us a CAS number or a SMILES string. We build a 3D model with the element symbol on every atom: as a print-ready file for your printer, as a finished print, or both, delivered anywhere in the world.
CAS, SMILES or a name · reply within 1 working day · shipped worldwide
From a CAS number to a model in your hands
One request is enough. Everything between your molecule and the finished model is our job.
You send
Your molecule
CAS · SMILES · name
01
Structure checked
Computed 3D geometry, checked before we build; predicted for brand-new compounds
02
Model built
A letter on every atom, a Ø 100 mm display base, name and QR code underneath
03
Print project
Slicer project and ready G-code for your printer and material, checked before release
04
Printed, if you like
One piece, straight from our printer, like the caffeine model in the photos above
You get
File, print or both
Delivered anywhere in the world
CAS, SMILES or just a name
Any one of them is enough to start.
CAS number
The quickest route
We take the computed 3D structure of the molecule and check it before we build.
SMILES string
Enough on its own
No CAS number needed. Paste it into the form exactly as it is.
Brand-new compound
We predict the geometry
No CAS number, no published 3D structure? For new research compounds we predict the 3D geometry from the SMILES and build the model from it.
A predicted geometry is computed, not measured. We say so plainly: such models are labelled PREDICTED MODEL – NOT VERIFIED, so nobody mistakes them for an experimental structure.
Turn it in your hand, before you print
The same caffeine model on its display base, exactly as the printer builds it. Rotate it, zoom in, cut off the supports, try other colours.
Preview of the 6-colour print model — rotate it with your mouse or finger; see it as printed, finished, as the molecule alone, and where to cut it off the pencils
Drag to rotate; scroll or pinch to zoom. Each part is shown in the colour of its filament.
⬇️ Sliced for H2C (G-code 3MF) · 48 MB⬇️ Everything in one ZIP · 148 MBFull multicolour specification ↓
Chemistry they can hold
Printed molecules in your students’ hands. Not just coloured: engraved, with a letter on every atom.
An ordinary model
- Every atom is the same sphere
- Printed in one colour, carbon and nitrogen look alike
- Students ask: which atom is which?
A MolGod engraved model
- C, H, N or O on every atom, readable in plain white plastic
- True 3D geometry, not a flat drawing lifted off the page
- Formula on top; name, CAS number and a QR code to its page underneath
Caffeine, live in your browser
The same molecule in our interactive viewer: rotate it, switch styles, read its NMR spectrum and safety data. Every model we make gets a page like this.
Model views
© 2026 MolGod.org. All rights reserved. · Image rights
Why some molecules are not on the menu
Algorithms keep a strict diet. Show them a perfectly ordinary molecule under the wrong name and they decide it is not kosher, not halal, quite possibly not even vegan. Then the whole website goes on their blacklist, benzene included.
Chemistry does not work that way. A carbon atom in a regulated medicine is the same carbon atom you find in caffeine, and its model is just as easy to make. We simply prefer not to argue with a filter that reads names instead of structures. So some molecules stay off the public menu, and that is why many molecules we could make for you are not listed on this site.
The kitchen is still open. Send us a CAS number or a SMILES string and we will prepare a 3D model of any molecule, made to order and delivered straight to you. It never appears on the site, so the algorithms can stick to their diet in peace. We serve science: structures, models and published data. No recipes: nobody gets instructions for making anything.
Send us your molecule
We reply within one working day. Teachers and lecturers: the first 25 who join Wave 1 by 30 December 2026 get their model and 72 hours of our team’s help free of charge; in return we ask for photos of your prints and a few honest words about how it went.
Print caffeine tonight
The caffeine model above is free to download: the engraved molecule on its 100 mm base, one STL file in millimetres, with print settings.
Download caffeine, ready to print →
Free for non-commercial use under CC BY-NC-SA 4.0 (the NORMAL and ENGRAVED caffeine models: CC BY-SA 4.0). More free models for class on the page for teachers.