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Buy Wholesale and maintain an Active status for 2 months and we will refund your $39 Distributor Fee
07-SEPTEMBER-2008 03:17:44 - Xanthone Xanthone Xanthone IUPAC name 9H-xanthen-9-one Other names xanthone 9-oxo-xanthene diphenyline ketone oxide Identifiers CAS number 90-47-1 SMILES O=C2C3=CC=CC=C3 OC1=CC=CC=C12 Properties Molecular formula C13H8O2 Molar mass 196.19 g/mol Appearance off-white solid Melting point 174 °C 447 K Boiling point 351 °C 624 K Solubility in water sl. sol. in hot water Hazards R-phrases R36/37/38 S-phrases S26,S371 Related compounds Related compounds xanthene Except where noted otherwise, data are given for materials in their standard state at 25 °C, 100 kPa Infobox references Xanthone is an organic compound with the molecular formula C13H8O2. It can be prepared by the heating of phenyl salicylate.2 In 1939, xanthone was introduced as an insecticide and it currently finds uses as ovicide for codling moth eggs and as a larvicide.3 Xanthone is also used in the preparation of xanthydrol which used in the determination of urea levels in the blood. Xanthone derivatives The chemical structure of xanthone forms the central core of a variety of naturally occurring organic compounds, such as mangostin, which are sometimes collectively referred to as xanthones.4 Over 200 xanthones have been identified. Xanthones are natural constituents of plants in the families Bonnetiaceae and Clusiaceae and are found in some species in the family Podostemaceae.5 Many of these xanthones are found in the pericarp of the mangosteen fruit Garcinia mangostana, which can be found in the region of Southeast Asia. Synthetic derivatives of xanthone can be added during the polymerization of polyester, to form a plastic that has a greater resistance to degradation by ultraviolet light.citation needed The most useful derivative is tetrahydroxyxanthone. Polyester film can be used for the production of third generation printed solar cells, to make them a cost effective alternative to silica-based solar energy generation. It was originally intended that the additive be used for polyester greenhouses in hot climates, where the plastic would degrade after a few years from UV exposure. The xanthone-treated product has an extended useful lifetime of ten years instead of three. References ^ MSDS from AlphaAesar ^ Organic Syntheses, Coll. Vol. 1, p.552 1941 - preparation of xanthone ^ Steiner, L. F. and S. A. Summerland. 1943. Xanthone as an ovicide and larvicide for the codling moth. Journal of economic entomology 36, 435-439. ^ PubMed.gov - journal articles on xanthones ^ Angiosperm Phylogeny Group 2003. An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG II. Botanical Journal of the Linnean Society 141: 399-436 Available online: Abstract | Full text HTML | Full text PDF Retrieved from http://en..org/wiki/Xanthone Categories: Aromatic compounds | Heterocyclic compounds | Ketones | Ethers | InsecticidesHidden categories: All articles with statements | Articles with statements since February 2008 Views Article Discussion this page History Personal tools Log in / create account Navigation Main page Contents Featured content Current events Random article Search Go Search Interaction Community portal Recent changes Contact Donate to Help Toolbox What links here Related changes Upload file Special pages Printable version Permanent link Cite this page Languages Deutsch Français РуÑ?Ñ?кий This page was last modified on 7 August 2008, at 18
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