Aspirin 3D Molecular Model — CAS 50-78-2

Aspirin (C9H8O4, CAS 50-78-2) — a free educational 3D molecular model for teachers and students, by MolGod.org. Instead of colour coding, every sphere carries its engraved element symbol. Look at the skeleton first: Aspirin contains one aromatic 6-membered ring, and students can trace 21 bonds (13 single, 2 double and 6 aromatic, drawn in Kekulé form). Students work from the model back to the formula C9H8O4: the symbol count is 9 C + 8 H + 4 O, or 21 atoms all told. Before any theory, let students hunt on the model for the carboxylic acid group (-COOH) and the ester group (-COO-). Full record and more free models: https://molgod.org/molecule/50-78-2/?utm_source=sketchfab&utm_medium=referral&utm_campaign=edu-3d-models Licence & provenance: https://molgod.org/licenses/stl/50-78-2/ PubChem CID 2244 · InChIKey BSYNRYMUTXBXSQ-UHFFFAOYSA-N · MolGod ID MG_161-948-169-73 Required attribution (CC BY-SA 4.0): "Aspirin 3D model by MolGod.org — https://molgod.org/molecule/50-78-2/ — CC BY-SA 4.0"