Figure 1.

¹H-NMR spectra of selected RYR dietary supplements (DS) recorded in CD₃CN:D₂O (80:20). Entire spectrum of DS 15 (A) and enlarged downfield region (4–9 ppm) (B) of the DS 3, 15, 20 and 23. DeM: dehydromonacolins, Monacolins lactone: monacolins in lactone form, Monacolins OHAc: monacolins in hydroxyl acid form, Mo: monascin and other pigments with the same skeleton, FA: fatty acids (saturated and unsaturated), ●: non-conjugated unsaturated fatty acids, C: carnitine, Vit: vitamin, TSP: sodium 2,2,3,3-tetradeutero-3-(trimethylsilyl) propanoate, set at 0 ppm.