Results 251 to 260 of about 31,646 (297)

Preparative separation of tetrahydrofurfurylamine enantiomers

Russian Journal of Organic Chemistry, 2007
Tetrahydrofurfurylamine enantiomers were separated on a preparative scale by fractional crystallization of diastereoisomeric salts with natural L-tartaric acid. (R)-Tetrahydrofurfurylamine was isolated in 68% yield with an optical purity of more than 98.5% according to the HPLC data.
D. M. Musatov, V. S. Kublitskii, O. R. Malyshev, D. V. Kurilov, M. G. Vinogradov   +4 more
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Techniques in Preparative Chiral Separations

ChemInform, 2001
AbstractFor Abstract see ChemInform Abstract in Full Text.
Pilar Franco, Cristina Minguillon
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Preparative—Semipreparative Separations of Peptides

ChemInform, 2004
AbstractFor Abstract see ChemInform Abstract in Full Text.
Denis B. Scanlon, James Finlayson
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Preparation and separation of methyl ethers of d-arabinose

Analytical Biochemistry, 1972
Abstract All possible methyl ethers of methyl β- d -arabinofuranoside and methyl β- d -arabinopyranoside were prepared by partial methylation using Kuhn's method (Ag2O and MeI in N,N-dimethylformamide) and Haworth's method (Me2SO4 and 40% NaOH in water).
P A, Mied, Y C, Lee
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Preparative Electrophoretic Separation of Antibody Forming Cells

Preparative Biochemistry, 1972
Abstract A procedure is described for preparative electrophoretic separation of lymphoid cells. The separations were performed with a free flow electrophoretic cell separator model VAP IV (Desaga, Heidelberg, Bender & Hobein, Munich, Brinkmann Instruments, Westbury, N. Y.).
K, Zeiller, G, Pascher, K, Hannig
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Chiral lumazines: Preparation, properties, enantiomeric separation

Chirality, 1994
AbstractOptically active lumazines (biolumazine, dictyolumazine, monalumazine, and neolumazine) are prepared from the corresponding pterins by enzymatic reaction, using pterin deaminase excreted by Dictyostelium discoideum. The fluorescence properties, circular dichroism spectra, and chromatographic behavior of these lumazines are studied.
R, Klein, I, Tatischeff, G, Tham, N, Mano   +3 more
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Preparation and Separation of DNA‐Wrapped Carbon Nanotubes

Current Protocols in Chemical Biology, 2015
AbstractPurification of single‐chirality single‐wall carbon nanotubes (SWCNTs) from their synthetic mixture is a prerequisite for many applications. DNA‐controlled carbon nanotube (CNT) purification has evolved over a decade along with other separation techniques utilizing different types of dispersing agents such as surfactants and polymers.
Geyou, Ao, Ming, Zheng
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Membrane Chromatography: Preparation and Applications to Protein Separation

Biotechnology Progress, 1999
As a result of the convective flow of solutes through porous membranes, membrane chromatography has a higher capture efficiency and a higher productivity than column chromatography and shows most promising industrial applications for the recovery, isolation, and purification of proteins and enzymes.
X, Zeng, E, Ruckenstein
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Separation of interleukins by a preparative chromatofocusing-like method

Journal of Chromatography A, 1993
A chromatofocusing-like method used in the large-scale separation of deamidated from amidated recombinant human interleukin-1 alpha (amino acids 117-271), derived from Escherichia coli, is described. Two major protein species having isoelectric points (pI) of approximately 5.3 and 5.1 were separated by high-performance liquid chromatography using a ...
S P, Monkarsh, E A, Russoman, S K, Roy
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On Preparative Separation of Brain Mitochondrial Monoamine Oxidases

Preparative Biochemistry, 1979
A method was developed for solubilization from bovine brain stem mitochondrial fraction of monoamine oxidases deminating biogenic amines. Preparative separation of the monoamine oxidases, possessing different substrate specificities, was achieved by column chromatography on a biospecific adsorbent AH-Sepharose 4 B. The enzyme preparations thus obtained
T A, Moskvitina, N S, Kamyshanskaya, T G, Garishvili, V Z, Gorkin   +3 more
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