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L-tryptophan zwitterion 3D Model — CAS 73-22-3

by MolGod.org

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Licence	CC BY-SA
Source	Sketchfab
Designer	MolGod.org
Attribution	MolGod.org on Sketchfab · CC-BY-SA 4.0 (attribution + share-alike) · Attribution required
Tags	stl, molecule, teaching, classroom, engraved, education, science, chemistry, 3d-printing, stem, molecular-model, amine

L-tryptophan zwitterion (C11H12N2O2, CAS 73-22-3) — 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. At its heart, L-tryptophan zwitterion is built around two rings (one 5-membered and one 6-membered), fused along a shared edge, both aromatic. The model shows 28 bonds: 17 single, 1 double and 10 aromatic, drawn in Kekulé form. How many atoms can the class find? The engraved spheres give 11 C + 12 H + 2 N + 2 O, so the answer should be 27. Functional groups to find on the model: carboxylic acid group (-COOH) and primary amino group (-NH2). Full record and more free models: https://molgod.org/molecule/73-22-3/?utm_source=sketchfab&utm_medium=referral&utm_campaign=edu-3d-models Licence & provenance: https://molgod.org/licenses/stl/73-22-3/ Required attribution (CC BY-SA 4.0): "L-tryptophan zwitterion 3D model by MolGod.org — https://molgod.org/molecule/73-22-3/ — CC BY-SA 4.0"

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