Isolation of 4,5-O-Dicaffeoylquinic Acid as a Pigmentation Inhibitor Occurring in Artemisia capillaris Thunberg and Its Validation In Vivo

Figure 2

HPLC chromatogram of purified compound 4,5-diCQA. (a) Chemical structure of 4,5-diCQA. (b) 4,5-diCQA was isolated from A. capillaris by HPLC as described in Section 2.

(a)

(b)