TCI B6638 Bicyclo[2.2.1]hept-5-en-2-one (CAS 694-98-4), commonly known as norbornenone, is a strained bicyclic enone available from AMI Scientific. The strained alkene drives efficient ring-opening metathesis polymerisation and Diels-Alder chemistry, while the ketone group supports reduction, organometallic addition, and Baeyer-Villiger oxidation. Its rigid framework also makes it valuable for stereoselective synthesis and terpenoid-type scaffold construction. Offered in 200 mg and 1 g packs, it should be stored cold, sealed, and protected from light to prevent unwanted polymerisation.
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![Bicyclo[2.2.1]hept-5-en-2-one (CAS 694-98-4) - TCI B6638 - AMI Scientific](http://amiscientific.com/cdn/shop/files/TCI2510B6638.jpg?v=1767094075&width=1445)