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. 2017 Mar 14;4(1):14. doi: 10.3390/medicines4010014

Figure 2.

Figure 2

Figure 2

HPTLC fingerprints of Angelica sinensis cultivated in Gansu (tracks 3–8) and Yunnan (tracks 9–14). Isoimperatorin (Rf = 0.46), Imperatorin (Rf = 0.38), ferulic acid (Rf = 0.12), osthole (Rf = 0.33) and Z-ligustilide (Rf = 0.59) were used as reference substances. (a) Image of the plate prior to derivatization under UV 254 nm; (b) Image of the plate prior derivatization under UV 366 nm; (c) Image of the plate after derivatization under WRT; (d) Image of the plate after derivatization under UV 366 nm.