منابع مشابه
Reactions of PTIO and Carboxy - PTIO with
Nitronyl nitroxides, such as derivatives of 2-phenyl4,4,5,5,-tetramethylimidazoline-1-oxyl 3-oxide (PTIOs), react with NO to form the corresponding imino nitroxides (PTIs) and NO2. PTIOs are considered as monitors of NO, stoichiometric sources of NO2, biochemical and physiological effectors, specific tools for the elimination of NO, and potential therapeutic agents. However, a better understand...
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The structure of the title compound, C(9)H(7)NO(6), is essentially planar [maximum deviation 0.284 (2)Å] except for the methyl H atoms. The crystal structure is stabilized by asymmetric O-H⋯O hydrogen bonds linking the hydrogen carboxyl-ates into pairs around the inversion centres. There is also π-π stacking of the benzene rings [centroid-centroid distance 3.6912 (12) Å].
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5(6)-Carboxy-rhodamine 110 isomers were rapidly synthesized by condensation of 3-aminophenol and trimellitic anhydride using microwave irradiation as heating method. After esterification of the two isomers, separation and hydrolyzation provided target products,5-carboxy-rhodamine 110 and 6-carboxy-rhodamine 110, in high yields. The results shows microwave irradiation can effectively reduce ...
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In the title salt, C(5)H(8)N(3) (+)·C(7)H(3)N(2)O(7) (-), the pyridine N atom of the 3,4-diamino-pyridine mol-ecule is protonated. The 3,5-dinitro-salicylate anion shows whole-mol-ecule disorder over two orientations with a refined occupancy ratio of 0.875 (4): 0.125 (4). In the crystal, the cations and anions are connected by inter-molecular N-H⋯O and C-H⋯O hydrogen bonds, forming a three-dime...
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Fibrillins are large cysteine-rich glycoproteins (~350 kDa) which form the molecular scaffold of a class of beaded microfibrils that are key structural elements of dynamic connective tissues (Kielty and Shuttleworth, 1995). These microfibrils are extensible polymers which act as a structural lattice for elastin deposition during elastic fibre formation (Mecham and Heusar, 1991). Linkage of the ...
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ژورنال
عنوان ژورنال: Proceedings of the Japan Academy
سال: 1953
ISSN: 0021-4280
DOI: 10.2183/pjab1945.29.17