Name

Linear equation

R²

Linear range (mg/mL)

Sodium danshensu

Y = 6749.18X + 45.8

0.9999

0.041 - 1.31

Protocatechuic aldehyde

Y = 44313.2X + 71.3

0.9997

0.008 - 0.261

Salvianolic acid B

Y = 10344.9X + 4.00

0.9999

0.011 - 0.348

4-Coumaric acid

Y = 38777.1X + 5.41

1.000

0.002 - 0.049

Rosmarinic Acid

Y = 27828.3X + 46.3

0.9998

0.010 - 0.321