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Table 2 RR and reference compound for RR method

From: A simple method for HPLC retention time prediction: linear calibration using two reference substances

  Peak 1 Peak 2 Peak 3 Peak 4 Peak 5 Peak 6 Peak 7 Peak 8 Peak 9 Peak 10 Peak 11
Psoraleae (n = 23) 0.226 0.247 0.615 0.657 0.794 0.808 0.878 1.000a 1.061 1.103 1.152
Paridis (n = 30) 0.652 0.729 1.000a 1.090        
  1. aReference compound