TRI produces tropine and TRII produces pseudotropine. Its name derives from the molecule tropine (itself named for the molecule atropine). Atropine is synthesized by a reaction between tropine and tropate, catalyzed by atropinase. Bindweed contains several alkaloids, including pseudotropine, and lesser amounts of tropine, tropinone, and meso-cuscohygrine. Albert Ladenburg first generated cycloheptatriene in 1881 by the decomposition of tropine. Tropanserin can be prepared by the reaction of tropine with 3,5-dimethylbenzoyl chloride. I converts tropinone to tropine which condenses with phenylalanine-derived phenyllactate to littorine. It is called "tropinovec" (tropine, means squeezed half-dried grapes, in the west of the country). Other names in common use include tropine dehydrogenase, tropinone reductase (ambiguous), and TR-I. Tropine is a derivative of tropane containing a hydroxyl group at the third carbon.