Pentamidine 3D Molecular Model — CAS 100-33-4

Pentamidine (C19H24N4O2, CAS 100-33-4) — a free educational 3D molecular model for teachers and students, by MolGod.org. Symbols are engraved into every atom, so students read atoms by symbol, not by colour. At its heart, Pentamidine is built around two 6-membered rings, both aromatic. The model shows 50 bonds: 36 single, 2 double and 12 aromatic, drawn in Kekulé form. How many atoms can the class find? The engraved spheres give 19 C + 24 H + 4 N + 2 O, so the answer should be 49. This molecule gives students these functional groups to identify: two ether linkages (C-O-C). Plan it into a unit on aromaticity and delocalised electrons. For compare-and-contrast work, 4-Ethoxybenzoic acid (CAS 619-86-3) and Phenoxyethanol (CAS 122-99-6) are structurally close to it in this collection. MolGod.org shares these models for free to make chemistry tangible in the classroom. Teachers: let students set the model beside a skeletal formula and list what the drawing omits. Full record and more free models: https://molgod.org/molecule/100-33-4/?utm_source=thingiverse&utm_medium=referral&utm_campaign=edu-3d-models Licence & provenance: https://molgod.org/licenses/stl/100-33-4/ Same file on Wikimedia Commons: https://commons.wikimedia.org/wiki/File:Pentamidine-3D-molecular-model-engraved-CAS-100-33-4.stl A ball-and-stick model of Pentamidine 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: 607,522 triangles, closed (watertight) single solid. Coordinates in ångström (STL stores no unit) — scale the model deliberately in your slicer. Names in other languages: Pentamidin (de); pentamidyna (pl); 噴他脒 (zh). Chemical identity - CAS Registry Number: 100-33-4 - Molecular formula: C19H24N4O2 - Molar mass: 340.4 g/mol (exact mass 340.18992602) - IUPAC name: 4-[5-(4-carbamimidoylphenoxy)pentoxy]benzenecarboximidamide - MolGod ID: MG_172-244-784-72 (https://molgod.org/id/MG_172-244-784-72) - PubChem CID: 4735 (https://pubchem.ncbi.nlm.nih.gov/compound/4735) - Wikidata: Q416206 (https://www.wikidata.org/wiki/Q416206) - EC number: 202-841-0 - ChemSpider ID: 4573 - InChIKey: XDRYMKDFEDOLFX-UHFFFAOYSA-N - SMILES: C1=CC(=CC=C1C(=N)N)OCCCCCOC2=CC=C(C=C2)C(=N)N

Required attribution (CC BY-SA 4.0): "Pentamidine 3D model by MolGod.org — https://molgod.org/molecule/100-33-4/ — CC BY-SA 4.0" Licence text: https://creativecommons.org/licenses/by-sa/4.0/