Melatonin 3D Molecular Model — CAS 73-31-4

Melatonin (C13H16N2O2, CAS 73-31-4) — 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. At its heart, Melatonin is built around two rings (one 5-membered and one 6-membered), fused along a shared edge, both aromatic. The model shows 34 bonds: 23 single, 1 double and 10 aromatic, drawn in Kekulé form. Hand the model round and let students tally the engraved atoms: 13 C + 16 H + 2 N + 2 O, 33 in total. Before any theory, let students hunt on the model for the amide group (-CO-N<) and the ether linkage (C-O-C). Full record and more free models: https://molgod.org/molecule/73-31-4/?utm_source=sketchfab&utm_medium=referral&utm_campaign=edu-3d-models Licence & provenance: https://molgod.org/licenses/stl/73-31-4/ MolGod ID MG_661-874-104-87 · PubChem CID 896 Required attribution (CC BY-SA 4.0): "Melatonin 3D model by MolGod.org — https://molgod.org/molecule/73-31-4/ — CC BY-SA 4.0"