1- -pyridinium inner

C1JH14CINO5 33369-28-7) see Zomepirac 2 -carboxy-4-chloro-3-nitrobenzophenone (C14H8CINO5 85-54-1) see Chlortalidone [6/ -[6a,7p(Z)]]-l-[[2-carboxy-7-[[[[2-(l,l-dimethyl-ethoxy)- ,l-dimethyl-2-oxoethoxy]imino)[2-[(triphcnyl-methyl)amino]-4-thiazolyl]acetylJamino]-8-oxo-5-thia-l-azabicyclo[4.2.0]oct-2-en-3-yl]methyl]pyridinium inner salt... 

Fig. 2 Examples of the structures of a few fast-response electric filed sensitive dyes N-(4-sulpho-butyl)-4-(4-(4-(dipentylamino)phenyl)butadienyl)pyridinium inner salt (RH421, a styrylpyridinium dye), ANNINE 5 (an annellated hemicyanine dye), merocyanine 540, and N-[(4 -dimethylamino)-3-hydroxy-6-flavonyl mcthyl-N,N-trimcthyl ammonium (F4N1, a 3-hydroxychromone dye)...

Figure 3. Protomers of l-( -carboxyethyl)-5-hydroxy-2-(hydroxymethylf pyridinium inner salt (alapyridaine)...

Figure 4. Influence of the pH value on the UV/Vis spectrum (left side), and the CNMR data (excerpt on right side) of l-(l-carboxyethyl)-5-hydroxy-2 (hydroxymethyl)-pyridinium inner salt (alapyridaine)...

The triplet state A2m, with a single electron in a high energy 2a g orbital, is a strong one-electron reductant in aqueous solution. The phosphorescence of Pt2(pop)4 is quenched by the oxidant l,r-bis(sulfoethyl)-4,4 -bis(pyridinium inner salt) (BSEP) to give Pt2(pop)4 and BSEP" (Ref. 39) ... 

METHYLPHENYL)SULF0NYL]AMIN0]PYRIDINIUM INNER SALT... 

Methylphenyl)sulfonyl]amino] pyridinium inner salt... 

Metal-mediated Reaction. The o -position of this inner salt can undergo dehydrogenative cross-coupling with terminal aUcynes, such as phenylacetylene, under Cu-mediated reaction conditions. The a-alkynyl derivative readily cyclizes in situ with the loss of the Ts group to afford 2-phenylpyrazolo[ l,5-a]pyridine in a 22% yield. This inner salt does not work as well as the analogous l-(benzoylamino)pyridinium inner salt in this reaction. ... 

CA Index Name Pyridinium, 4-[2-[6-(dioctylamino)-2-naphthalenyl]ethenyl]-l-(3-sulfopropyl)-, inner salt Other Names Di-8-ANEPPS 4-(2-[6-(Dioctylamino)-2-naphthalenyl]ethenyl)-1 -(3-sulfopropyl)pyridinium inner salt JPW 1153 Merck Index Number Not listed Chemical/Dye Class Styryl Molecular Formula C36H52N2O3S Molecular Weight 592.88 Physical Form Orange to red powder... 

Chemical Name (6R-trans)-1-[ [2-Carboxy-8-oxo-7-[(2-thienylacetyl)amino] -5-thia-1-azabi-cyclo[4.2.0]oct-2-en-3-yl] methyl] pyridinium hydroxide inner salt... 

Glutaconaldehyde (8) 2-Pentenedial (9) (821-42-1) Glutaconaldehyde, sodium salt, dihydrate Glutaconaldehyde, ion (1 ) sodium (8) 2-Pentenedial, ion (1 ), sodium (9) (24290-36-6) Pyridinium-1-sulfonate Pyridinium, 1-sulfo-, hydroxide, inner salt (8,9) (42824-16-8)... 

A theoretical study based on PM3 frontier molecular orbital (FMO) and potential energy surface (PES) analysis at the restricted Hartree-Fock (RHF)/6-31+G level was performed to examine the reaction of l-amino-2-ethoxycarbonyl-pyridinium mesitylenesulfonate and acrylonitrile in the presence of Hilnig s base leading to the formation of l,2-dihydropyrido[l,2-A]pyridazinium inner salt 17 <1999JOC9001>. The calculations indicated that both the [3+2] cycloaddition reaction and the ring expansion occurred in a concerted manner rather than through a stepwise mechanism via a zwitterionic intermediate 16 (Scheme 1). 

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