Description

This entry presents Epichlorohydrin (C3H5ClO; CAS 106-89-8; PubChem CID 7835 (https://pubchem.ncbi.nlm.nih.gov/compound/7835)) as a 3D-printable ball-and-stick model in which every atom carries its engraved element symbol (C, H, Cl, 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 10 atoms: 3 C, 5 H, 1 Cl, 1 O 10 bonds, all single One 3-membered ring Functional groups: one epoxide ring (three-membered C-O-C ring) and one C-Cl bond One stereocentre; configuration not defined in the source record (no R/S label) — IUPAC name 2-(chloromethyl)oxirane No hydrogen-bond donors and one acceptor (computed) Every carbon atom is sp3-hybridised (tetrahedral) Use in teaching Counting task: students tally the engraved symbols (3 C, 5 H, 1 Cl, 1 O; 10 atoms) and rebuild the formula C3H5ClO from the model alone. Stereochemistry: locate the stereocentre; the source record defines no configuration, so the printed conformer should not be read as a specific stereoisomer. Functional groups: find the epoxide ring (three-membered C-O-C ring) and the C-Cl bond on the model and name each one. File and printing STL mesh of 121,712 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: 4.128 × 4.365 × 3.004 Å; at scale factor 10 (1 Å to 10 mm, file read in millimetres) the print measures about 41.3 × 43.7 × 30.0 mm. SHA-256: 3cef099ed958c3cc4df4561dc746d0303d78abd8a2a065c4a36d2b95a0921db4. Validation InChIKey identical to the PubChem record (PubChem FTP SDF, file dated 2026-10-08): BRLQWZUYTZBJKN-UHFFFAOYSA-N Molecular formula and hydrogen-bond donor/acceptor counts identical to PubChem Stereocentres in PubChem: 0 defined, 1 undefined; both counts match this record 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/106-89-8 (https://molgod.org/molecule/106-89-8/?utm_source=nih3d&utm_medium=referral&utm_campaign=edu-3d-models) · Licence and provenance record: molgod.org/licenses/stl/106-89-8 (https://molgod.org/licenses/stl/106-89-8/) · Same file on Wikimedia Commons: File:Epichlorohydrin-3D-molecular-model-engraved-CAS-106-89-8.stl (https://commons.wikimedia.org/wiki/File:Epichlorohydrin-3D-molecular-model-engraved-CAS-106-89-8.stl) MolGod ID: MG_725-593-588-20 (https://molgod.org/id/MG_725-593-588-20) Wikidata: Q423083 (https://www.wikidata.org/wiki/Q423083) EC number: 203-439-8 ChemSpider ID: 13837112 InChIKey: BRLQWZUYTZBJKN-UHFFFAOYSA-N SMILES: C1C(O1)CCl Molar mass 92.52 g/mol (exact mass 92.0028925) Licence: CC BY-SA 4.0 (licence text (https://creativecommons.org/licenses/by-sa/4.0/)). Required attribution: "Epichlorohydrin 3D model by MolGod.org — https://molgod.org/molecule/106-89-8/ — CC BY-SA 4.0".