## 3 Results and Discussion
### Quantification of Compounds **1-18** in CSBPT Samples
\begin{tabular}{c c c c c c c c c c} \hline \hline  & & \multicolumn{4}{c}{**Intra-Day (\(n=5\))**} & \multicolumn{4}{c}{**Inter-Day (\(n=5\))**} & \multicolumn{4}{c}{**Repeatability (\(n=6\))**} \\ \cline{3-10}
**Analyte** & **Conc.** & **Observed** & **Precision** & **Accuracy** & **Observed** & **Precision** & **Accuracy** & **RSD (\%) of** & **RSD (\%)** \\  & **(\(\text{\text{\text{\text{\text{\text{\text{\text{\text{\text{\text{\text{\text{\text{ \text{ \text{ \text{ }}}}}}}}}}}}}}\) / mL)** & **Conc.** & **(\%)** & **(\%)** & **Conc.** & **(\%)** & **(\%)** & **Retention** & **of Peak** \\  & & **(\(\text{\text{\text{\text{\text{\text{\text{\text{\text{\text{{\text{\text{{\text{ \text{ \text{ \text{  {   }}}}}}}}}}}}}}}\) / mL)** & **(\%)** & **(\(\text{\text{\text{\text{\text{\text{\text{\text{\text{\text{{\text{\text{{ \text{\text{\text{\text{{\text{\text{{    \texttexttexttext{{            }}}}}}}}}}}}}}}}\) / mL)** & **(\(\text{\text{\text{\text{\text{\text{\text{\text{\text{{\text{\text{\text{{ \text{\text{\text{{\text{\text{{\texttexttext{{      \texttexttexttexttexttexttexttext{{          }}}}}}}}}}}}}}}}}\) / & **Time** & **Area** \\ \hline \multirow{4}{*}{**7**} & 5.00 & 5.20 & 1.44 & 104.07 & 5.34 & 2.33 & 106.90 & \multirow{4}{*}{0.03} & \multirow{4}{*}{0.37} \\  & 10.00 & 10.49 & 1.53 & 104.86 & 10.66 & 2.34 & 106.62 & & \\  & 20.00 & 20.65 & 1.39 & 103.24 & 20.74 & 1.54 & 103.69 & & \\  & 5.00 & 5.21 & 1.87 & 104.22 & 5.37 & 3.04 & 107.48 & & \\
**8** & 10.00 & 10.50 & 1.69 & 104.97 & 10.68 & 2.43 & 106.78 & 0.03 & 0.40 \\  & 20.00 & 20.68 & 1.36 & 103.41 & 20.79 & 1.65 & 103.97 & & \\  & 12.50 & 12.89 & 1.73 & 103.12 & 13.20 & 2.33 & 105.63 & & \\
**9** & 25.00 & 26.02 & 2.05 & 104.09 & 26.41 & 2.37 & 105.62 & 0.03 & 0.25 \\  & 50.00 & 51.04 & 1.42 & 102.08 & 51.29 & 1.60 & 102.58 & & \\  & 25.00 & 26.14 & 1.83 & 104.56 & 26.96 & 3.05 & 107.85 & & \\
**10** & 50.00 & 52.56 & 1.77 & 105.12 & 53.45 & 2.41 & 106.90 & 0.03 & 0.35 \\  & 100.00 & 103.20 & 1.43 & 103.20 & 103.79 & 1.67 & 103.79 & & \\  & 12.50 & 13.09 & 1.79 & 104.73 & 13.52 & 3.09 & 108.17 & & \\
**11** & 25.00 & 26.44 & 1.98 & 105.75 & 26.86 & 2.38 & 107.44 & 0.02 & 0.39 \\  & 50.00 & 52.21 & 1.52 & 104.43 & 52.41 & 1.69 & 104.82 & & \\  & 12.50 & 12.85 & 1.67 & 102.80 & 13.29 & 3.07 & 106.32 & & \\
**12** & 25.00 & 26.10 & 1.32 & 104.42 & 26.39 & 1.69 & 105.55 & 0.02 & 0.43 \\  & 50.00 & 51.32 & 1.39 & 102.63 & 51.66 & 1.60 & 103.31 & & \\  & 5.00 & 5.22 & 1.74 & 104.38 & 5.35 & 2.53 & 107.03 & & \\
**13** & 10.00 & 10.52 & 1.94 & 105.17 & 10.63 & 2.02 & 106.32 & 0.02 & 0.33 \\  & 20.00 & 20.67 & 1.39 & 103.34 & 20.69 & 1.23 & 103.46 & & \\  & 5.00 & 5.19 & 1.73 & 103.87 & 5.37 & 3.08 & 107.31 & & \\
**14** & 10.00 & 10.49 & 1.82 & 104.91 & 10.66 & 2.37 & 106.58 & 0.02 & 0.35 \\  & 20.00 & 20.62 & 1.30 & 103.09 & 20.74 & 1.54 & 103.68 & & \\  & 12.50 & 12.87 & 1.50 & 102.94 & 13.13 & 2.83 & 105.03 & & \\
**15** & 25.00 & 26.04 & 0.99 & 104.17 & 26.18 & 1.22 & 104.71 & 0.02 & 0.39 \\  & 50.00 & 51.45 & 1.12 & 102.90 & 51.19 & 0.93 & 102.38 & & \\  & 12.50 & 13.07 & 1.81 & 104.60 & 13.47 & 2.95 & 107.79 & & \\
**16** & 25.00 & 26.28 & 1.92 & 105.13 & 26.71 & 2.43 & 106.83 & 0.02 & 0.38 \\  & 50.00 & 51.65 & 1.40 & 103.31 & 51.92 & 1.65 & 103.84 & & \\  & 12.50 & 13.07 & 1.83 & 104.55 & 13.36 & 2.06 & 106.85 & & \\
**17** & 25.00 & 26.20 & 1.74 & 104.82 & 26.50 & 1.79 & 106.02 & 0.01 & 0.32 \\  & 50.00 & 51.54 & 1.32 & 103.08 & 51.83 & 1.59 & 103.67 & & \\  & 5.00 & 5.18 & 1.18 & 103.58 & 5.31 & 2.22 & 106.24 & & \\
**18** & 10.00 & 10.41 & 1.33 & 104.06 & 10.55 & 1.83 & 105.53 & 0.01 & 0.27 \\  & 20.00 & 20.52 & 1.06 & 102.60 & 20.57 & 1.02 & 102.87 & & \\ \hline \hline \end{tabular}   
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