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Structural assignment of isomeric chain demethylated retinals by 1H NMR spectroscopyA. D. Broek; J. M. L. Courtin; J. R. Mellema; J. Lugtenburg; K. Nicolay; K. Dijkstra; R. Kaptein · 1982
Preparation of deuterium-labelled retinals having high deuterium content on specific positions 10-Mono-, 11-mono-, 10,11-di- and 14,20,20,20-tetradeuterioretinalA. D. Broek; J. Lugtenburg · 1982
Preparation of 11,14-epoxy-bridged and isomeric chain-demethylated retinals. 13-Demethyl-11,14-epoxy-, 9-demethyl-, 13-demethyl- and 9,13-bisdemethyl-retinalsA. D. Broek; M. Muradin-Szweykowska; J. M. L. Courtin; J. Lugtenburg · 1983
Bacteriorhodopsins with a chemically modified chromophore. The light-driven proton pump action of [13-demethyl-11,14-epoxy]-, [9-demethyl]-, [13-demethyl]- and [9,13-bisdemethyl]-bacteriorhodopsinM. Muradin-Szweykowska; A. D. Broek; J. Lugtenburg; R. L. van der Bend; P. W. M. van Dijck · 1983