Simultaneous Determination of Three Coumarins in <i>Angelica dahurica</i> by <sup>1</sup>H-qNMR Method: A Fast and Validated Method for Crude Drug Quality Control

<div><sup>1</sup>H NMR spectrum of <i>A. dahurica</i> in the DMSO-d<sub>6</sub> solvent: (1) Suining Sichuan, (2) Mengzhou Henan, (3) Anhui, (4) Bozhou Anhui, (5) Heze Shandong, (6) Suining Sichuan (stove drying), (7) Xiaoying Hebei, (8) Yangjiaying Hebei, (9) Xinqiao Sichuan, (10)- Daying Sichuan, and (11) Xinsheng Sichuan; (A) imperatorin, (B) byakangelicin, (C) hydroquinone, (D) oxypeucedanin, (E) isoimperatorin, (F) bergapten, and (G) DMSO-d<sub>6</sub>.</div>

Journal of Analytical Methods in Chemistry

fig3

Figure 3

Figure 3: Simultaneous Determination of Three Coumarins in <i>Angelica dahurica</i> by <sup>1</sup>H-qNMR Method: A Fast and Validated Method for Crude Drug Quality Control 

Figure 3 | Simultaneous Determination of Three Coumarins in Angelica dahurica by 1H-qNMR Method: A Fast and Validated Method for Crude Drug Quality Control 