Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Preparation H

Endium (Labs. Europhta) Flebosmil (Socopharm) Lilosmil (Evans Medical) M iveine (Elerte) Preparation H Veinotonic (Whitehall)... [Pg.675]

Figure 10.4 Area-normalized CL spectra of Pt4/7/2 for the pure Pt (dotted Une), Pt5gCo42 (solid line), and PtgoRu4o (dashed line) alloys with respect to p (a) as-prepared (h) after electrochemical stabilization. The samples were thin film pure Pt or Pt-based alloys (diameter 8 mm and thickness 80 nm) prepared on Au disks by DC sputtering. Electrochemical stabilization of Pt58 C042 was performed by repeated potential cycling between 0.075 and 1.00 V at a sweep rate of 0.10 V s in 0.1 M HCIO4 under ultrapure N2 (99.9999%) until CV showed a steady state. PtgoRu4o was stabilized by several potential cycling between 0.075 and 0.80 V at 0.10 V s in 0.05 M H2SO4 under ultrapure N2. (From Wakisaka et al. [2006], reproduced by permission of the American Chemical Society.)... Figure 10.4 Area-normalized CL spectra of Pt4/7/2 for the pure Pt (dotted Une), Pt5gCo42 (solid line), and PtgoRu4o (dashed line) alloys with respect to p (a) as-prepared (h) after electrochemical stabilization. The samples were thin film pure Pt or Pt-based alloys (diameter 8 mm and thickness 80 nm) prepared on Au disks by DC sputtering. Electrochemical stabilization of Pt58 C042 was performed by repeated potential cycling between 0.075 and 1.00 V at a sweep rate of 0.10 V s in 0.1 M HCIO4 under ultrapure N2 (99.9999%) until CV showed a steady state. PtgoRu4o was stabilized by several potential cycling between 0.075 and 0.80 V at 0.10 V s in 0.05 M H2SO4 under ultrapure N2. (From Wakisaka et al. [2006], reproduced by permission of the American Chemical Society.)...
Figure 6.18 Preparative H PLC column (15 cm in diameter) used in processing of proteins required for therapeutic or diagnostic purposes. Column manufactured by Prochrom, Nancy, France (photograph courtesy of Affinity Chromatography Ltd)... Figure 6.18 Preparative H PLC column (15 cm in diameter) used in processing of proteins required for therapeutic or diagnostic purposes. Column manufactured by Prochrom, Nancy, France (photograph courtesy of Affinity Chromatography Ltd)...
In the first step, we were able to separate this penta derivative by preparative H.P.L.C. and we subsequently treated it with an excess of propyleneimine in order to reach the required hexasubstituted compound. Under such conditions, we succeeded in preparing a N3P3(MeAz)g real sample (free of chlorine, as demonstrated by neutron activation analysis) identified by mass spectrometry (Fig. 32) and by P nmr (Fig. 33) (6 = — 36 ppm with 85 % HjPO as standard, to be compared with 8(N3P3Azg) = --37 ppm). The refractive index of this sample, n = 1.4825, appeared to be significantly far from Ratz s value. [Pg.44]

Figure 3.6 (a) l-V curves and (b) single cell performances of Pt-Ru 40wt% catalysts supported on as prepared H-CNF, nanotunneled H-CNF and 60wt% E-TEK catalyst examined at 30, 60 and 90°C. [Pg.80]

Microcalorimetry experiments with NH3 and pyridine as probe molecules indicated that insertion of Ga into the offretite aluminosilicate structure increased the overall acid sites strength of the crystals while decreasing its acid sites density [255], The observed heterogeneity of acid site strength distribution of H,Ga,Al-offretites was attributed to some extra-framework Al(Vl) and Ga(Vl) species generated during the ion exchange and calcination procedures used to prepare H-offretite crystals. [Pg.247]

Cream (Rectal) 1% (Nupercainal Hydrocortisone Cream, Cortizone-10, Preparation H Hydrocortisone, Proctocort, Procto-Kit 1%), 2.5%(Anusol-HC, Hemorrhoidal HC, Procto-Kit 2.5%, Proctosol-HC, Proctozone-HC). [Pg.593]

The 3//-l,2,4-diazaphospholes formed from the reaction of diazomethane and its monosubstituted derivatives (R CH=N2 R = H, alkyl, aryl, acyl, phosphoryl) could not be isolated due to a rapid 1,5-H shift leading to 27/-l,2,4-diazaphospholes 227. When diazo(trimethylsilyl)methane or [bis(diisopropylamino)phosphino]dia-zomethane was used, the l,5-SiMe3 [or PR2, R = N(/-Pr)2] shift completely dominates over the H shift (289,290). In the case of open-chain or cyclic a-diazoketones, cycloadducts 228 cannot be isolated due to rapid acyl shifts giving 229 and ultimately 230 (289). This transformation offers a versatile method to prepare [h]-fused 1,2,4-diazaphospholes from cyclic a-diazoketones and phos-phaalkynes (289). [Pg.589]

Inducers of CYP3A4 such as St. John s wort preparations (H. perforatum), phenobarbital, carbamazepine, and rifampin may reduce plasma concentrations of estrogens, possibly resulting in a decrease in therapeutic effects and/or changes in the uterine bleeding profile ... [Pg.254]

Anti- inflammatory topical preparations Hydrocortisone, 0.5% (cream, ointment, lotion), 1% (cream, ointment, lotion, spray) Cortaid, Cortizone- 10, Preparation H, various generic Used to temporarily relieve itching and inflammation associated with minor rashes due to contact or allergic dermatitides, insect bites, and hemorrhoids. Apply sparingly to affected areas two to four times daily. [Pg.1345]

Hemorrhoidal products Hemorid Preparation H (cream, ointment, suppository)... [Pg.1349]

TV-Hydroxyglycine was obtained in 1896 by acidolysis of the nitrone resulting from the condensation of awd-benzaldoxime 17 with chloroacetic acid 22 N-Alkylation of 17 with a-bromoesters was extended much later to the synthesis of various TV-hydroxyamino acids 23,24 It is notable that syn-benzaldoxime is O-alkylated under the same conditions 25 As substitution of a-bromoacids proceeds with inversion of configuration, Liberek and Palacz 26 prepared H-D-(OH)Phe-OH from (.S )-c/.-bromo-p-phenylpropanoic acid, obtained by HN02 deamination of L-Phe in the presence of KBr. Treatment of nitrone 19 with an TV-hydrox-ylamine salt yields the corresponding TV-hydroxyamino ester 20 (Scheme 5) 24,27 ... [Pg.425]

The compound [Au(S03F)3] has been prepared and is a powerful acceptor for S03F-. Thus complexes of [Au(S03F)4]- with cations K+, Br, Br , [I(S03F)2]+ and [Br(S03F)2]+ have been prepared. H[Au(SC>3F)4] is a strong acid when dissolved in HS03F. Complexes can be prepared by several methods, for example as shown in equation (65a).510-512... [Pg.891]

For the insertion of noble metal ions into phthalocyanine H2(Pc), the latter is favorably activated by transformation into its lithium derivative. Thus, reaction of Li2(Pc) with [Rh(COD)Cl]2 in a large excess of a donor solvent L yielded the Rh(II) complexes, Rh(Pc) L2 (L = Py, BuNH2, Bipy, Pyz) [119]. The formation of these Rh(II) species is very remarkable because Rh insertions normally yield either Rh(I) or Rh(III) derivatives. Recently, tris(ethylenediamine)-rhodium(III) iodide [Rh(en)3]I3 and phthalodinitrile have been used to prepare H [RhI2(Pc)] 2phthalodinitrile. This material was then transformed into [Rh(OH)2(Pc)] by treatment with first H2SQ4 and then KOH. Treatment of... [Pg.17]

Example. Electrodialysis has been used to purify day suspensions from electrolyte impurities. It has also been used to prepare homoionic day partide surfaces, although the only form that can be prepared in this manner is that having protons as the exchangeable ions, i.e., H-clays. Figure 4.12 provides a schematic illustration. This can be problematic in that preparing H-form days can lead to dissolution of the clay lattice itself [267]. [Pg.114]

Fig. 7. Baseline-corrected ATR-FTIR spectra through the NHS activation sequence discussed in the text (a) freshly prepared H/Si(lll), (b) after functionalization with undecylenic acid, (c) surface (b) reacted with NHS/EDC for 1 hour at room temperature and (d) surface (c) after reaction with TEGamine. The background used is the spectrum of a clean oxidized ATR Si(lll) crystal for (a) and the spectrum of a Si(lll)-H surface for (b) and (c). Reprinted from [53]. Fig. 7. Baseline-corrected ATR-FTIR spectra through the NHS activation sequence discussed in the text (a) freshly prepared H/Si(lll), (b) after functionalization with undecylenic acid, (c) surface (b) reacted with NHS/EDC for 1 hour at room temperature and (d) surface (c) after reaction with TEGamine. The background used is the spectrum of a clean oxidized ATR Si(lll) crystal for (a) and the spectrum of a Si(lll)-H surface for (b) and (c). Reprinted from [53].
The 2,7-disulfonic acid can be used to prepare H acid by a diffwent method, as shown in the following reactions ... [Pg.374]

One of tbe ofdest and besL krtown carbonyl alJcylation roactions is the m l-onic ester synthesis, ai) exooUont method for preparing h carboxync acij trom an alkyl halide while lengthening the carbon chain by tw o atoms. [Pg.916]

H. Wamhoff and W. Wambach, J. Prkal. Chem., in preparation. H. Wamhoff and A. Schmidt, unpublished. [Pg.259]

Fig. 7. Comparison of the secondary structure of the LI binding site in archaeal 23S rRNA and similar structures in the mRNA from three different archaea. Structure of the LI binding site in the archaeal 23S rRNA taken from ref [145], S. solfataricus LI 1-L1-L10-L12 mRNA from [Ramirez et al, in preparation], H. cutirubrum L1-L10-L12 mRNA from ref [150], and M vannielii Ll-LlO-... Fig. 7. Comparison of the secondary structure of the LI binding site in archaeal 23S rRNA and similar structures in the mRNA from three different archaea. Structure of the LI binding site in the archaeal 23S rRNA taken from ref [145], S. solfataricus LI 1-L1-L10-L12 mRNA from [Ramirez et al, in preparation], H. cutirubrum L1-L10-L12 mRNA from ref [150], and M vannielii Ll-LlO-...

See other pages where Preparation H is mentioned: [Pg.166]    [Pg.281]    [Pg.70]    [Pg.402]    [Pg.189]    [Pg.93]    [Pg.593]    [Pg.255]    [Pg.255]    [Pg.232]    [Pg.798]    [Pg.37]    [Pg.885]    [Pg.129]    [Pg.131]    [Pg.105]    [Pg.1529]    [Pg.6]    [Pg.311]    [Pg.201]    [Pg.53]    [Pg.359]    [Pg.114]    [Pg.114]    [Pg.145]    [Pg.88]    [Pg.283]    [Pg.141]    [Pg.310]   


SEARCH



Preparative Chromatography. Edited by H. Schmidt-Traub

© 2024 chempedia.info