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Apterin is a furanocoumarin glucoside reported to dilate coronary arteries as well as block calcium channels. It can be found in plants of the Apiaceae family. It has been isolated from the root of plants in the genus Angelica, including Garden Angelica and in Zizia aptera.


Azalein is a chemical compound. It is a flavonol, a type of flavonoid. It is the 3-O-α-L-rhamnoside of azaleatin. It can be found in the flowers of Plumbago and Rhododendron species.


Azepines are heterocycles of seven atoms, with a nitrogen replacing a carbon at one position. A well known azepine derivative is caprolactam.


Azocane is a heterocyclic organic compound. It consists of a saturated eight-membered ring having seven carbon atoms and one nitrogen atom attached to a single hydrogen atom. The fully unsaturated analog of azocane is azocine.


Azocine is a heterocyclic organic compound. It consists of an unsaturated eight-membered ring having seven carbon atoms, one nitrogen atom and four double bonds. Azocine rings are found in many natural products, including the manzamine family of marine alkaloids.


Betaine can be used to treat high homocysteine levels. Its alkylated derivates are used as quaternary ammonium zwitterionic surfactants.

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Bohrium is a synthetic element that is not present in the environment at all. The first convincing synthesis was in 1981 by a German research team led by Peter Armbruster and Gottfried Münzenberg at the Gesellschaft für Schwerionenforschung (Institute for Heavy Ion Research, GSI) in Darmstadt using the Dubna reaction. In 1989, the GSI team successfully repeated the reaction during their efforts to measure an excitation function. During these experiments, 261Bh was also identified in the 2n evaporation channel and it was confirmed that 262Bh exists as two states - a ground state and an isomeric state. The IUPAC/IUPAP Transfermium Working Group report in 1992 officially recognised the GSI team as discoverers of bohrium.

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