Separation of the Optical Isomers of Amino Acids by Ligand-Exchange Chromatography Using Chemically Bonded Chiral Phases, by G. Gübitz et al, Journal of Chromatography, vol. 203, 1981, pp. 377-384.Gubitz, G., Jellenz, W. and Santi, W.: Separation of the Optical Isomers of Amino-Acids ...
HPLC of the derivatives was then performed on a reversed phase column, with a mobile phase containing Cu(II) L-proline, using fluorescence detection and resolved the optical isomers of the common primary amino acids. The same approach was also used to resolve compounds containing amine and ...
In molecular chemistry, chiral molecules (called enantiomers or optical isomers) are those which have the same chemical composition but constitute mirror images of each other and cannot be superimposed by any symmetry operations. Enantiomers have the same composition in terms of constituting atoms and ...
In molecular chemistry, chiral molecules (called enantiomers or optical isomers) are those which have the same chemical composition but constitute mirror images of each other and cannot be superimposed by any sym- metry operations. Enantiomers have the same composi- tion in terms of constituting ...
number of optical isomers is 2n, wherenis the number of asymmetric centers. Polarimetry, the measurement of optical rotation, of a pharmaceutical article may be the only convenient means for distinguishing optically active isomers from each other and thus is an important criterion of identity and ...
M. Riskin, R. Tel-Vered, M. Frasconi, N. Yavo, I. Willner, Stereoselective and chiroselective surface plasmon resonance (SPR) analysis of amino acids by molecularly imprinted Au-nanoparticle composites. Chem. Eur. J.16, 7114–7120 (2010) ...
Thus these are called “optical isomers” in that they differ solely in the direction of their optical rotation. By the way, Pasteur also studied athirdform of tartaric acid that does not rotate plane-polarized light at all. This form was called “meso” (Greek for middle, since the light...
Maria-Hormigos, R., Jurado-Sanchez, B., Escarpa, A.: Self-propelled micromotors for naked-eye detection of phenylenediamines isomers. Anal. Chem.90(16), 9830–9837 (2018) ArticleCASGoogle Scholar Sun, H.J., Zhou, Y., Ren, J.S., Qu, X.G.: Carbon nanozymes: enzymatic properties, ...
2.The separating agent for optical isomers according to claim 1, wherein the helical polymer is left-handed. 3.The separating agent for optical isomers according to claim 1, wherein an amino acid residue in the formula (1) is a residue of one of optically active amino acids. ...
Described are novel mixtures of optical isomers of (i) styralyl alcohol (α-phenylethyl alcohol) or (ii) styralyl acetate (α-phenylethyl acetate), fermentation processes for preparing same and organoleptic uses for same as aroma or food flavor ingredients. ...