1-Ethoxy-2-propanol 3D Molecular Model — CAS 1569-02-4

1-Ethoxy-2-propanol (C5H12O2, CAS 1569-02-4) — a free educational 3D molecular model for teachers and students, by MolGod.org. Each atom is labelled with its own engraved element symbol: no colour chart needed.

Plain ball-and-stick prints look the same for every element: the STL format has no way to say which ball is carbon and which is oxygen. Our answer is to cut each element symbol into its sphere, so the printed object labels itself in any colour of filament. Our goal is to let students understand on their own how the atoms are arranged, how they are bonded and what the 3D geometry looks like, straight from the model in their hands. Teachers get the structure and its atom labels in a single download, which removes the slowest steps before a classroom print. Background, references and the planned classroom study: How the engraved atom letters are designed.

1-Ethoxy-2-propanol has no rings at all: its 19 atoms form an open chain held together by 18 bonds (all of them single). A five-minute warm-up: read the symbol on every sphere and write down the totals (5 C + 12 H + 2 O = 19 atoms). Spot-the-group challenge: can students find the hydroxyl group (-OH) and the ether linkage (C-O-C)? 1-Ethoxy-2-propanol makes an open question in stereochemistry: one stereocentre, configuration not given, and room for students to propose R or S. A good fit for lessons on chirality, enantiomers and CIP (R/S) rules, as well as on alcohols and hydrogen bonding.

Teachers and students can use this MolGod.org model free of charge. Teachers: pair it with the MolGod.org record to connect the 3D shape with identifiers and data.

This printable molecule is free to use in lessons, clubs and workshops. Publishing pictures, materials or remixes of it? Under CC BY-SA 4.0, name "MolGod.org" as the author, link back to the original and to the licence, mark your changes and keep remixes under the same terms. A ready-made attribution is included below. No sign-up, no fees and no review required. Every review helps us refine the models for students. Tell us what you think in the comments, or reach us at Write to the MolGod team. We enjoy hearing from classrooms: start a conversation in the comments or get in touch with us directly, we are glad to help. All we need is a CAS number: from it MolGod generates the 3D structure, engraves every atom and prepares the STL.

Full record and more free models: 1-Ethoxy-2-propanol, CAS 1569-02-4: structure, properties and 3D viewer
Licence & provenance: Licence record for this 1-Ethoxy-2-propanol model
Same file on Wikimedia Commons: https://commons.wikimedia.org/wiki/File:1-Ethoxy-2-propanol-3D-molecular-model-engraved-CAS-1569-02-4.stl
Plain-text record for AI assistants: 1-Ethoxy-2-propanol data sheet in plain text for LLMs

A ball-and-stick model of 1-Ethoxy-2-propanol 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: 210,528 triangles, closed (watertight) single solid. Coordinates in ångström (STL stores no unit) — scale the model deliberately in your slicer.

Names in other languages: (RS)-1-Ethoxy-2-propanol (de); (RS)-1-etoksy-2-propanol (pl).

Chemical identity

• CAS Registry Number: 1569-02-4

• Molecular formula: C5H12O2

• Molar mass: 104.15 g/mol (exact mass 104.083729621)

• IUPAC name: 1-ethoxypropan-2-ol

• MolGod ID: MG_167-913-508-71 (Permanent MolGod record MG_167-913-508-71)

• PubChem CID: 15287 (https://pubchem.ncbi.nlm.nih.gov/compound/15287)

• Wikidata: Q27288224 (https://www.wikidata.org/wiki/Q27288224)

• EC number: 216-374-5

• ChemSpider ID: 14552

• InChIKey: JOLQKTGDSGKSKJ-UHFFFAOYSA-N

• SMILES: CCOCC(C)O

Required attribution (CC BY-SA 4.0): "1-Ethoxy-2-propanol 3D model by MolGod.org — https://molgod.org/molecule/1569-02-4/ — CC BY-SA 4.0"
Licence text: https://creativecommons.org/licenses/by-sa/4.0/