Vanillin 3D Molecular Model — CAS 121-33-5

Vanillin (C8H8O3, CAS 121-33-5) — a free educational 3D molecular model for teachers and students, by MolGod.org. Each atom is labelled with its own engraved element symbol: no colour chart needed.

Look at the skeleton first: Vanillin contains one aromatic 6-membered ring, and students can trace 19 bonds (12 single, 1 double and 6 aromatic). Hand the model round and let students tally the engraved atoms: 8 C + 8 H + 3 O, 19 in total. On the printed model, students can point to the aldehyde group (-CHO), the phenolic hydroxyl group (Ar-OH) and the ether linkage (C-O-C). A good fit for lessons on aromaticity and delocalised electrons, on the carbonyl group (C=O), as well as on phenols and hydrogen bonding. Same formula, different structure: put it next to (-)-Mandelic acid (CAS 611-71-2) and Methylparaben (CAS 99-76-3) from the same collection and ask students what changed.

MolGod.org builds and releases these models at no cost for chemistry teaching. Teachers: hand out printed copies and ask students to rebuild the structural formula from the model.

Full record and more free models: https://molgod.org/molecule/121-33-5/?utm_source=myminifactory&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/