xanthene

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xan·thene

 (zăn′thēn′)
n.
A yellow crystalline organic compound, C13H10O, that is soluble in ether and is used as a fungicide and in organic synthesis. The structural unit of xanthene is a feature in several fluorescent dyes.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

xanthene

(ˈzænθiːn)
n
(Elements & Compounds) a yellowish crystalline heterocyclic compound used as a fungicide; benzo-1,4-pyran. Its molecular structural unit is found in many dyes, such as rhodamine and fluorescein. Formula: CH2(C6H4)2O
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

xan•thene

(ˈzæn θin)

n.
a yellow, crystalline substance, C13H10O, used in organic synthesis and as a fungicide.
[1905–10]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
Provectus' intellectual property (IP) includes a family of US and international patents that protect the process by which pharmaceutical grade RB and related xanthenes are produced, reducing the formation of previously unknown transhalogenated impurities that exist in commercial grade RB in uncontrolled amounts.
Provectus is a clinical-stage biotechnology company developing a new class of drugs for oncology and dermatology based on a wholly-owned family of chemical small molecules called halogenated xanthenes.
This plant also causes kidney damage due to elevated hepatic and renal Xanthenes' Oxidase activities due to Lantadine, the phytotoxin present in this plant (Sharma et al., 1981).
Yoon, "Fluorescent chemosensors based on spiroring-opening of xanthenes and related derivatives," Chemical Reviews, vol.
Table 1 shows the phototoxicity and dark toxicity of the xanthenes in HEp-2 after 6 h incubation with the dye.
The high quantum yield of fluorescence was reported for laser organic dyes (xanthenes, oxazines, 7-aminocoumarins) [11].
These compounds or phytochemical constituents incorporate terpenes, flavonoid, bioflavonoid, benzophenones, xanthenes and also a few metabolites, for example, tannins, saponins, cyanates, oxalate and anthrax-quinones [6].
The activity of hepatoprotective plants has been related to certain secondary metabolites, such as alkaloids, coumarins, carotenoids, flavonoids, glycosides, lignans, xanthenes, lipids, monoterpenes, and organic acids (Oh et al., 2004; Yan et al., 2009).
Oncology company Provectus Biopharmaceuticals (NYSE MKT:PVCT) disclosed on Tuesday the receipt of the US patent covering additional aspects of its process for synthesizing halogenated xanthenes, which is part of the family of compound of rose bengal.
Compound 1 displayed profound inhibition of xanthenes oxidase with IC50 values of 11.920.01 u M, followed by compounds 2 and 3 with IC50 values of 73.74 u M and 97.120.01 u M respectively.
Patent 8,530,675, Process for the Synthesis of 4,5,6,7-tetrachloro-3',6'- dihydroxy-2',4',5',7'-tetraiodo-3H-spiro[isobenzofuran-1,9- xanthen]-3-one (Rose Bengal) and Related Xanthenes. The application details a new process for the manufacture of Rose Bengal and related iodinated xanthenes in high purity.
Several methods have been reported for the synthesis of xanthenes which includes by using poly(4-vinyl pyridinium) perchlorate [9], task specific acidic ionic liquid [NMP] [H.sub.2]S[O.sub.4] [10], nano silica phosphoric acid [11], HCl[O.sub.4]-Si[O.sub.2] [12], proline triflate in water [13], Iodine [14], In[Cl.sub.3] [15], Sr[(OTf).sub.2] [16] and p-TSA [17].