Description

This entry presents 8-Hydroxyquinoline (C9H7NO; CAS 148-24-3; PubChem CID 1923 (https://pubchem.ncbi.nlm.nih.gov/compound/1923)) as a 3D-printable ball-and-stick model in which every atom carries its engraved element symbol (C, H, N, 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. Biological relevance: 8-Hydroxyquinoline is recorded as a chelating agent; students can locate its ring nitrogen and phenolic hydroxyl group on the model (source: Wikidata Q270162 (https://www.wikidata.org/wiki/Q270162), retrieved 2026-10-10). Structure at a glance 18 atoms: 9 C, 7 H, 1 N, 1 O 19 bonds: 8 single, 11 aromatic Two 6-membered rings, fused along a shared edge, both aromatic Functional groups: one phenolic hydroxyl group (Ar-OH) and one pyridine-type ring nitrogen One hydrogen-bond donor and two acceptors (computed) No carbon atom is sp3-hybridised Use in teaching Counting task: students tally the engraved symbols (9 C, 7 H, 1 N, 1 O; 18 atoms) and rebuild the formula C9H7NO from the model alone. Aromaticity: identify the two aromatic rings and the 11 bonds recorded as aromatic. Functional groups: find the phenolic hydroxyl group (Ar-OH) and the pyridine-type ring nitrogen on the model and name each one. File and printing STL mesh of 251,112 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: 5.929 × 5.947 × 5.279 Å; at scale factor 10 (1 Å to 10 mm, file read in millimetres) the print measures about 59.3 × 59.5 × 52.8 mm. SHA-256: b6a0139cda618ebaeeaa5a8d8ff5655f30dc76fd869962a21569f37e60488509. Validation InChIKey identical to the PubChem record (PubChem FTP SDF, file dated 2026-10-08): MCJGNVYPOGVAJF-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/148-24-3 (https://molgod.org/molecule/148-24-3/?utm_source=nih3d&utm_medium=referral&utm_campaign=edu-3d-models) · Licence and provenance record: molgod.org/licenses/stl/148-24-3 (https://molgod.org/licenses/stl/148-24-3/) · Same file on Wikimedia Commons: File:8-Hydroxyquinoline-3D-molecular-model-engraved-CAS-148-24-3.stl (https://commons.wikimedia.org/wiki/File:8-Hydroxyquinoline-3D-molecular-model-engraved-CAS-148-24-3.stl) MolGod ID: MG_259-537-449-58 (https://molgod.org/id/MG_259-537-449-58) Wikidata: Q270162 (https://www.wikidata.org/wiki/Q270162) EC number: 205-711-1 ChemSpider ID: 1847 IUPAC name: quinolin-8-ol InChIKey: MCJGNVYPOGVAJF-UHFFFAOYSA-N SMILES: C1=CC2=C(C(=C1)O)N=CC=C2 Molar mass 145.16 g/mol (exact mass 145.052763847) Licence: CC BY-SA 4.0 (licence text (https://creativecommons.org/licenses/by-sa/4.0/)). Required attribution: "8-Hydroxyquinoline 3D model by MolGod.org — https://molgod.org/molecule/148-24-3/ — CC BY-SA 4.0".