Table 2.

The amounts of three analytes in ECZ using HPLC-DAD

No.	Components	t R	μg/mL	μg/mg	SD	RSD, %
1	Chlorogenic acid	9.46	38.13	3.81	0.22	1.96
2	3,5-Di-caffeoylquinic acid	19.89	99.43	9.94	0.78	2.43
3	Luteolin	27.87	3.38	0.34	0.02	1.96