Research Article

Isolation of Oxyberberine and β-Sitosterol from Berberis lycium Royle Root Bark Extract and In Vitro Cytotoxicity against Liver and Lung Cancer Cell Lines

Figure 4

1H-NMR (a) and 13C-NMR (b) spectra of β-sitosterol recorded in CDCl3. The chemical shift (d) values are given in ppm with TMS as internal standard, and coupling constants (J) are in Hz.
(a)
(b)