1H NMR Fringerprints of Scutellaria Baicalensis

1H NMR spectra of Scutellaria baicalensis extracts were obtained by PFT-NMR and compared with those of the flavonoids found in the extract including baicalein, oroxylin A, wogonin and baicalin. 1H NMR chemical shifts were assigned. The spectra of different Scutellaria baicalensis extract samples showed good reproducibility, and all contained the spectral fingerprint of flavonoids. It appears feasible to use the 1H NMR fingerprints of Scutellaria baicalensis extract as a criterion to check the authenticity of Scutellaria baicalensis and Scutellaria baicalensis products.