Description

This entry presents Methanol (CH4O; CAS 67-56-1; PubChem CID 887 (https://pubchem.ncbi.nlm.nih.gov/compound/887)) as a 3D-printable ball-and-stick model in which every atom carries its engraved element symbol (C, H, O), so the model can be read without a colour key. Atomic coordinates come from the PubChem-computed 3D conformer (not an experimental crystal structure); coordinates and connectivity are unchanged. Structure at a glance 6 atoms: 1 C, 4 H, 1 O 5 bonds, all single No rings (open-chain structure) Functional group: one hydroxyl group (-OH) One hydrogen-bond donor and one acceptor (computed) Every carbon atom is sp3-hybridised (tetrahedral) Use in teaching Counting task: students tally the engraved symbols (1 C, 4 H, 1 O; 6 atoms) and rebuild the formula CH4O from the model alone. Functional groups: find the hydroxyl group (-OH) on the model and name it. File and printing STL mesh of 67,568 triangles, a closed (watertight) single solid. Coordinates are in ångström and STL stores no unit, so scale the model deliberately in your slicer. Measured bounding box: 2.766 × 2.781 × 2.26 Å; at scale factor 10 (1 Å to 10 mm, file read in millimetres) the print measures about 27.7 × 27.8 × 22.6 mm. SHA-256: 21443148e485435c26734f428c6b926297494d901638f26b4c818e54558e5632. Validation InChIKey identical to the PubChem record (PubChem FTP SDF, file dated 2026-10-08): OKKJLVBELUTLKV-UHFFFAOYSA-N Molecular formula and hydrogen-bond donor/acceptor counts identical to PubChem Mesh: triangle count in the header equals the actual count; 0 edges not shared by exactly two triangles; 1 connected solid; SHA-256 equal to the published file Source, licence and identifiers Full record: molgod.org/molecule/67-56-1 (https://molgod.org/molecule/67-56-1/?utm_source=nih3d&utm_medium=referral&utm_campaign=edu-3d-models) · Licence and provenance record: molgod.org/licenses/stl/67-56-1 (https://molgod.org/licenses/stl/67-56-1/) · Same file on Wikimedia Commons: File:Methanol-3D-molecular-model-engraved-CAS-67-56-1.stl (https://commons.wikimedia.org/wiki/File:Methanol-3D-molecular-model-engraved-CAS-67-56-1.stl) MolGod ID: MG_800-328-162-61 (https://molgod.org/id/MG_800-328-162-61) Wikidata: Q14982 (https://www.wikidata.org/wiki/Q14982) EC number: 200-659-6 ChemSpider ID: 864 IUPAC name: methanol InChIKey: OKKJLVBELUTLKV-UHFFFAOYSA-N SMILES: CO Molar mass 32.042 g/mol (exact mass 32.026214747) Licence: CC BY-SA 4.0 (licence text (https://creativecommons.org/licenses/by-sa/4.0/)). Required attribution: "Methanol 3D model by MolGod.org — https://molgod.org/molecule/67-56-1/ — CC BY-SA 4.0".