2-Ethylhexyl vinyl ether 3D Molecular Model — CAS 103-44-6

2-Ethylhexyl vinyl ether (C10H20O, CAS 103-44-6) — a free educational 3D molecular model for teachers and students, by MolGod.org. Element symbols are cut into each atom sphere: a self-labelled teaching aid.

Most printable molecule files rely on colour coding, yet the STL format carries no colour and a single-filament print loses it entirely. MolGod adds what the STL format leaves out by engraving the element symbol into each atom of the printed structure. The project exists to put these files in teachers' hands, so that identifying atoms becomes quick and the lesson can move on to how atoms interact. Teachers get the structure and its atom labels in a single download, which removes the slowest steps before a classroom print. The research behind the idea, and how we plan to test it, is described at https://molgod.org/engraved-molecular-models/.

Lay 2-Ethylhexyl vinyl ether on the desk and search for a ring: there isn't one. Its 31 atoms hang together through 30 bonds (29 single and 1 double). Students work from the model back to the formula C10H20O: the symbol count is 10 C + 20 H + 1 O, or 31 atoms all told. Name-and-locate exercise: students find the ether linkage (C-O-C) and the carbon-carbon double bond (C=C) on the model and afterwards write the name of every group they found. 2-Ethylhexyl vinyl ether has one stereocentre, and this record does not specify its configuration (R or S), which makes the model a natural way into a lesson on enantiomers. It makes chirality, enantiomers and CIP (R/S) rules easier to see.

MolGod.org offers this engraved model free to anyone teaching or learning chemistry. Teachers: the engraved symbols let students work with the model without a separate key.

The model is yours to download, print and teach with. When you publish a photo, a worksheet or a remix, CC BY-SA 4.0 requires you to credit "MolGod.org" as the author of the model, link to the original and to the licence, indicate any changes and share remixes under the same licence (the ready attribution line is below). There is no registration, no payment and no obligation to rate it. We build these models for learners, so your feedback guides us: leave a review below and tell us which detail would make the next molecule clearer. Or say hello at https://molgod.org/contact/. Feel free to discuss the model here, compare notes with other educators, or contact us; every conversation helps us build better teaching models. Need another molecule? Contact us and we will prepare a 3D model specially for you, starting from its CAS number.

Full record and more free models: https://molgod.org/molecule/103-44-6/?utm_source=printables&utm_medium=referral&utm_campaign=edu-3d-models
Licence & provenance: https://molgod.org/licenses/stl/103-44-6/
Same file on Wikimedia Commons: https://commons.wikimedia.org/wiki/File:2-Ethylhexyl_vinyl_ether-3D-molecular-model-engraved-CAS-103-44-6.stl
Also published on: Zenodo (DOI, latest version) https://doi.org/10.5281/zenodo.23629862

A ball-and-stick model of 2-Ethylhexyl vinyl ether 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: 337,766 triangles, closed (watertight) single solid. Coordinates in ångström (STL stores no unit) — scale the model deliberately in your slicer.

Chemical identity

• CAS Registry Number: 103-44-6

• Molecular formula: C10H20O

• Molar mass: 156.26 g/mol (exact mass 156.151415257)

• IUPAC name: 3-(ethenoxymethyl)heptane

• MolGod ID: MG_425-157-672-64 (https://molgod.org/id/MG_425-157-672-64)

• PubChem CID: 61004 (https://pubchem.ncbi.nlm.nih.gov/compound/61004)

• Wikidata: Q27281968 (https://www.wikidata.org/wiki/Q27281968)

• EC number: 203-111-4

• ChemSpider ID: 54965

• InChIKey: DSSAWHFZNWVJEC-UHFFFAOYSA-N

• SMILES: CCCCC(CC)COC=C

Required attribution (CC BY-SA 4.0): "2-Ethylhexyl vinyl ether 3D model by MolGod.org — https://molgod.org/molecule/103-44-6/ — CC BY-SA 4.0"
Licence text: https://creativecommons.org/licenses/by-sa/4.0/