Fluorones

Nutaksuka et al. [501] converted molybdenum to its molybdenum-phenyl-fluorone complex, then extracted the complex on a membrane filter prior to spectrophotometric determination on the membrane. 

M Industrial Chemical Products Div., St. Paul MN 55144-1000 DIBF, 5,7-diiodo-3-butoxy-6-fluorone (H-Nu 470), Spectra Group, Ltd., Maumee, OH 43537 OPPI, 4-octyloxyphenyl-phenyliodonium hexafluoroantimonate, G. E. Silicones, Waterford, NY 12188 and DIDMA, N,N-dimethyl-2,6-... 

Polymerization of Bisphenol-A and 4,4 -Dimercaptodiphenyl Sulfide with Fluoronated Bisaryls(4a-c)... 

Experimental fluorone initiators are available from the Spectra Group that absorb at 535 nm, designed for the frequency doubled Nd YAG laser, and at 635 nm for the helium-neon (633 nm) or diode (635 mn) lasers. ... 

Perfluoro- ethyl- hexane 026 Perfluoro- hexyl- ethane 062 Perfluoro- butyl- butane 044 Perfluoro- hexyl- hexane F6H6 (Fluoron GmbH) Perfluoro- hexyl-octane F6H8 (Fluoron GmbH)... 

In the meantime, corresponding mixtures of different perfluoralkyl-alkanes with silicone oil are available (Densiron 68 , Fluoron GmbH, Neu-Ulm, Germany). 

Oxane Hd (Bausch Lomb Inc.) Densiron 68 (Fluoron GmbH)... 

Mechanism of Action Ahigh-potency.fluoronated topical corticosteroid that has antiinflammatory, antipruritic, and vasoconstrictive properties. The exact mechanism of the anti-inflammatoryprocess is unclear TherapeuticEffect Reduces tissue response to the inflammatory process. 

In addition to these examples, an electron-transfer free radical photoinitiator H-Nu 470 (5,7-diiodo-3-butoxy-6-fluorone) has been also successfully used for 3D microfabrication by near-IR two-photon induced polymerization... 

Fig. 39 Micrograph of polymerized uniform submicrostructure with 9 p.m line width and 50 xm line spacing. The structure was written by two-photon initiated electron-transfer free radical polymerization of diacrylate monomer Sartomer SR 349 at 775 nm via direct excitation of dye 5,7-diiodo-3-butoxy-6-fluorone(H-Nu 470) for (A) and dye 3 for (B) in the presence of Ar,Ar-dimethyl-2,6-diisopropylaniline...

Phenyl-3-fluorone [975-17-7] M 320.3, m >300°(dec), Xmax 462nm (e 4.06 x 10, in IM HCl aq EtOH). Recrystd from warm, acidified EtOH by addition of ammonia. The crude material (Ig) can be extracted with EtOH (50ml) in a Soxhlet apparatus for lOhr to remove impurities. Impurities can be detected by paper electrophoresis. [Petrova et al. Anal Lett 5 695 1972]. 

Hydroxyl Derivatives. The building block of most hydroxyl-substituted xanthenes, or fluorones, is fluorescein (2). The sodium or potassium salt of fluorescein, commonly called uranine (Cl 45350). is used for dyeing wool and silk brilliant yellow shades. However, the principal use of fluorescein is as an intermediate for more highly substituted hydroxyxanthenes. 

Turchini and Gosselin de Beaumont" reported the use of 9-phenyl-(or 9-methyl-) 2,6,7-trihydroxy-3-fluorone for the differential staining of ribo- and desoxyribo-nucleic acids. The former gives rise to a yellow-pink color and the latter to a bluish-violet tint. It is necessary to hydrolyze the nucleic acid since it is the pentoses thereby liberated which yield the color, indicating that the reagent differentiates between ribose and its 2-desoxy analogue. 

Co (II) 2,6,7 -trihydroxy-9 - (4 -chlorophenyl) -3-fluorone-H202-Co(II) Alkaline medium HTAB... 

The most stable resonance structure for the cyclohexadienyl anion formed by reaction of methox-ide ion with o-fluoron i t n >ben/ene involves the nitro group and has the negative charge on oxygen. 

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