Vanillin 3D Molecular Model — CAS 121-33-5
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Free educational Vanillin model (C8H8O3, CAS 121-33-5) with an engraved element symbol on every atom.
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Vanillin (C8H8O3, CAS 121-33-5) — a free educational 3D molecular model for teachers and students, by MolGod.org. Whatever the filament colour, each atom reads clearly thanks to its engraved symbol.
Start with the ring system: Vanillin has one aromatic 6-membered ring; in total the model carries 19 bonds (12 single, 1 double and 6 aromatic). Use the engraved letters like a register: call out each element and tick it off until the class reaches 8 C + 8 H + 3 O (19 atoms altogether). Team task: with the model in hand, each group marks the aldehyde group (-CHO), the phenolic hydroxyl group (Ar-OH) and the ether linkage (C-O-C), then writes down what they found. Lesson link: aromaticity and delocalised electrons, the carbonyl group (C=O), as well as phenols and hydrogen bonding. For a lesson on isomerism, print it together with (-)-Mandelic acid (CAS 611-71-2) and Methylparaben (CAS 99-76-3): the same atoms, arranged differently.
Teachers and students can use this MolGod.org model free of charge. Teachers: print one per group and let students check the structure against the formula.
Full record and more free models: https://molgod.org/molecule/121-33-5/?utm_source=printables&utm_medium=referral&utm_campaign=edu-3d-models
Licence & provenance: https://molgod.org/licenses/stl/121-33-5/
Same file on Wikimedia Commons: https://commons.wikimedia.org/wiki/File:Vanillin-3D-molecular-model-engraved-CAS-121-33-5.stl
A ball-and-stick model of Vanillin with each element symbol recessed into its atom sphere, generated by MolGod.org from a PubChem-computed 3D conformer (not an experimental crystal structure); atomic coordinates and connectivity are unchanged. STL mesh: 259,524 triangles, closed (watertight) single solid. Coordinates in ångström (STL stores no unit) — scale the model deliberately in your slicer.
Names in other languages: Vanilline (fr); vanillina (it); vanilline (nl); wanilina (pl); 香草醛 (zh).
Chemical identity
CAS Registry Number: 121-33-5
Molecular formula: C8H8O3
Molar mass: 152.15 g/mol (exact mass 152.047344113)
IUPAC name: 4-hydroxy-3-methoxybenzaldehyde
MolGod ID: MG_862-948-061-70 (https://molgod.org/id/MG_862-948-061-70)
PubChem CID: 1183 (https://pubchem.ncbi.nlm.nih.gov/compound/1183)
Wikidata: Q33495 (https://www.wikidata.org/wiki/Q33495)
EC number: 204-465-2
ChemSpider ID: 13860434
InChIKey: MWOOGOJBHIARFG-UHFFFAOYSA-N
SMILES: COC1=C(C=CC(=C1)C=O)O
Required attribution (CC BY-SA 4.0): "Vanillin 3D model by MolGod.org — https://molgod.org/molecule/121-33-5/ — CC BY-SA 4.0"
Licence text: https://creativecommons.org/licenses/by-sa/4.0/