Variations of Flavone Glycosides Profile Underscore the Necessity of Quality Control of Prepared Microctis Folium Slices

Table 2

Linear regression equation and f_x of ten identified flavone glycosides.

Flavone glycosides	fx	Equation	R	Range (μg/mL)
Vicenin-2	1.04	Y = 2.27 × 10^7X − 4530.71	0.9994	1.25–12.50
Isoschaftoside	0.60	Y = 3.83 × 10^7X − 4504.44	0.9999	1.50–15.00
Schaftoside	0.76	Y = 3.00 × 10^7X − 3267.77	0.9998	1.31–13.12
Vitexin	1	Y = 2.25 × 10^7X + 975.72	0.9998	1.46–14.62
2”-O-rhamnosylvitexin	0.63	Y = 9.27 × 10^6X + 5065.10	0.9997	2.24–22.40
Isovitexin	1.04	Y = 2.16 × 10^7X − 2002.88	0.9999	1.48–14.76
Isoviolanthin	0.80	Y = 1.69 × 10^7X − 10972.54	0.9999	3.2–32.00
Nicotiflorin	0.91	Y = 1.64 × 10^7X + 16460.98	0.9999	1.76–17.60
Astragalin	1.13	Y = 2.05 × 10^7X − 1813.25	0.9999	1.41–14.12
Narcissoside	2.40	Y = 9.37 × 10^6X − 496.55	0.9999	1.61–16.12