Two-dimensional combination of the hydrogen and the ammonium forms of a cation-exchange layer for the separation of minor nucleic acid bases

A two-dimensional thin-layer chromatogra

A two-dimensional thin-layer chromatographic technique for the separation of admixtures of 5-bromouracil and DNA bases

✍ P.S. Bond 📂 Article 📅 1968 🏛 Elsevier Science 🌐 English ⚖ 356 KB

Separation of the pyridine-monocarboxyli

Separation of the pyridine-monocarboxylic and 2-pyridine-dicarboxylic acids by two-dimensional ion-exchange thin-layer chromatography

✍ Vincenzo Caruncho; Aldo Marino 📂 Article 📅 1967 🏛 Elsevier Science 🌐 English ⚖ 689 KB

qui a preconise l'emploi de solutions cl'dlectrolytes neutres pour s&parer les nucleotides. 11 ne nous a pas 6th possible, sur les dchangeurs d'ions commerciazcx, de &parer les desoxyribonucleotides avec les syst&mes d'8lution d&its par cet auteur2. D'autre part, la chromatographie bidimensionnelle2

Single-step separation of major and rare

Single-step separation of major and rare ribonucleosides and deoxyribonucleosides by high-performance liquid cation-exchange chromatography for the determination of the purity of nucleic acid preparations

✍ Hans-Joachim Breter; Gerhard Seibert; Rudolf K. Zahn 📂 Article 📅 1977 🏛 Elsevier Science 🌐 English ⚖ 380 KB

A method is described for the separation of 13 major and minor ribo-and deoxyribonucleosides in a single chromatographic run using high-performance liquid chromatography on strongly acidic cation-exchange columns. The method proved useful for the routine determination of small amounts of ribonucleic

Manipulation of separation selectivity f

Manipulation of separation selectivity for alkali metals and ammonium in ion-exchange capillary electrochromatography using a suspension of cation exchange particles in the electrolyte as a pseudostationary phase

✍ Michael C. Breadmore; Miroslav Macka; Paul R. Haddad 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 145 KB 👁 2 views

Manipulation of separation selectivity for alkali metals and ammonium in ion-exchange capillary electrochromatography using a suspension of cation exchange particles in the electrolyte as a pseudostationary phase The viability of using ion-exchange particles as a pseudostationary phase in capillary

A simple paper chromatographic method fo

A simple paper chromatographic method for separation of methylated adenines and cytosine from the major bases found in nucleic acids

✍ Eileen D. Rubery; Alison A. Newton 📂 Article 📅 1971 🏛 Elsevier Science 🌐 English ⚖ 282 KB

Molecular mechanical models for organic

Molecular mechanical models for organic and biological systems going beyond the atom centered two body additive approximation: aqueous solution free energies of methanol and N-methyl acetamide, nucleic acid base, and amide hydrogen bonding and chloroform/water partition coefficients of the nucleic acid bases

✍ Piotr Cieplak; James Caldwell; Peter Kollman 📂 Article 📅 2001 🏛 John Wiley and Sons 🌐 English ⚖ 145 KB

## Abstract We have developed a methodology to derive RESP charges for molecular mechanical models that include “lone pairs” on lone‐pair donor sites and atom‐centered polarizabilities. This approach uses a very high level __ab initio__ cc‐pVTZ basis set,1 where the multipole moments of the molecul