3- propanesulfonates

TAPSO A-tris(hydroxymethyl)methyl-2-hydroxy-3-aminopropanesulfonic acid. EPPS A-2-hydroxyethylpiperazine-JV -3-propanesulfonic acid. 

Pt-catalysed reduction of methylene blue and 10-methyl-5-deazoisoalloxazine -3-propanesulfonic acid Polymerized surfactant vesicles. Catalytic efficiencies high in these systems Kurihara and Fendler, 1983... 

Piperazine-N,N -bis(2-hydroxy-propanesulfonic acid (POPSO) N-(2-Hydroxyethyl)piperazine-N -(3-propanesulfonic acid)... 

Solubilization of Membrane Proteins. A modification of the procedure of Hjelmeland et al. (30) was employed. A 300-g portion of liquid-nitrogen frozen, 6-day Nicotiana silvestris cultured cells was suspended in 200 ml of 50 mM N-(2-hydroxyethyl)-piperazine-N -3-propanesulfonic acid (EPPS-KOH) buffer, 1 mM dithiothreitol (DTT), and 0.1 mM EDTA extraction buffer with constant stirring until completely suspended (20 min). The slurry was centrifuged in a Sorvall SS 34 rotor at 9,000g for 20 min at 4°C. The supernatant was passed through miracloth (Calbiochem). An aliquot... 

Pt particles were in situ generated by photolysis 563 of K2PtCl4. Vesicle-incorporated methylene blue (MB) or 10-methyl-5-deazaisoalloxazine-3-propanesulfonic acid (MAPS) were catalytically reduced by bubbling H2 through Pt-containing vesicles subsequent extravesicular addition of Fe3+ led to Fe2+ and MB or MAPS reformation these steps could be repeated several times... 

FNOR activity can be determined by measuring the formation of NADPH from NADP using reduced P. furiosus ferredoxin as the electron donor. Reduced ferredoxin is generated by P. furiosus pyruvate ferredoxin oxidoreductase (POR), which oxidatively decarboxylates pyruvate to acetyl-CoA. The reaction is carried out anaerobically under argon in a serum-stoppered cuvette (3 ml), since the reduced ferredoxin is rapidly oxidized in air. The 2 ml reaction mixture contains 100 mM EPPS [N-(2-hydroxyethyl)piperazine-iV -(3-propanesulfonic acid)] buffer, pH 8.0, 10 mM pyruvate, 0.2 mM coenzyme A, 80 p,g POR purified from P. furiosusf 12.5 jLg ferredoxin purified from P. furiosus, 0.3 mM NADP, and 10 (xg FNOR. The assay temperature is 80°. The reaction can be initiated by adding FNOR, ferredoxin, NADP, or POR as the final component. The production of NADPH is measured at 365 nm and the molar absorbance of 3400 M cm is used to calculate the concentration of NADPH. One unit of enzyme activity is equal to 1 p,mol NADPH produced per min. 

Hydroxyethyl)-1-piperazinepropanesulfonic acid 4-(2-Hydroxyethyl) piperazine-1-propanesulfonic acid N-[2-Hydroxyethyl] piperazine-N -[3-propanesulfonic acid]. See 3-[4-(Hydroxyethvl)-1-piperazinyll-propanesulfonic acid 3-[4-(Hydroxyethyl)-1-piperazinyl]-propanesulfonic acid... 

Saccharin calcium. See Calcium saccharin Saccharine-N-3-propanesulfonate, sodium salt. See Sodium saccharine-N-3-propanesulfonate Saccharine soluble. See Saccharin sodium anhydrous... 

Sapp 4, SAPP 22, SAPP 26, SAPP 28, SAPP 4a, SAPP. See Sodium acid pyrophosphate SAPS. See Sodium saccharine-N-3-propanesulfonate... 

Sodium 3-(2-propynyloxy)-1 -propanesulfonate Sodium saccharine-N-3-propanesulfonate Sodium vinyl sulfonate p-Toluene sulfonic acid... 

N-alkylated perflnorooctanesnlfonamides such as PFOS (3-dimethylamino-propyl)-amide can be functionalized to yield cationic snrfactants (Scheme 18.10). For example, the methylation of this amide yields fluorinated qnatemary ammoninm surfactant that were manufactured by the 3M Company (Figure 18.2). These ammonium surfactants can be fnrther alkylated to yield cationic surfactants with both a flnorophobic and a lipophobic chain. Similarly, zwitterionic surfactants are synthesized by using chloroacetic acid, 3-propanesulfonic acid, or related compounds instead of methyl iodide as an alkylating agent. 

A self-doped FT has been obtained from 3 -propanesulfonate terthiophene (62), which was selected because the trimer presents an oxidation potential lower than that of thiophene [165]. The electrolyte character of this compound is shown by the fact that its electropolymerization occurs in acetonitrile without the addition of a supporting electrolyte. 

A self-doped polythiophene has been prepared from 3 -propanesulfonate terthiophene (24) selected for the lower oxidation potential of the trimer compared with the monomer. This compound shows its electrolyte character by electropolymerizing in acetonitrile without addition of supporting electrolyte [113]. Self-doped polythiophenes with lower oxidation potentials and improved electrochemical behaviour have been prepared from 3-(co-carboxyalkyl)thiophenes with alkyl chains containing 4 to 14 carbon atoms (25) [173]. 

Kawahara et aL [58] produced a propylsulfonated-PBI (PBI-PrS) via a ringopening reaction of 1,3-propanesulfone with the N - H groups of the imida-... 

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