Figure 5. Crystal conformers of N -[ (1S) -1-(4-methoxyphenyl)ethyl]-amide 3b, its mirror isomer 4b , and Figure 5. Crystal conformers of N -[ (1S) -1-(4-methoxyphenyl)ethyl]-amide 3b, its mirror isomer 4b , racemate 5b (experimental data). The benzothiazine fragment is located vertically and is turned to the and racemate 5b (experimental data). The benzothiazine fragment is located vertically and is turned to the viewer by the C-atom of the 4-methyl group (colored blue). viewer by the C-atom of the 4-methyl group (colored