Mixture No. Taken (µg/ml) Found* (µg/ml) Recovery % MOX HCT MOX HCT MOX HCT PLS PCR PLS   PCR PLS   PCR PLS   PCR 1** 3 5 3.03 3.02 4.98 4.97 101.00 100.67 99.60 99.40 2 6 12 6.05 6.06 12.05 12.05 100.83 101.00 100.42 100.42 3 12 6 11.96 11.97 6.04 6.06 99.67 99.75 100.67 101.00 4** 6 10 6.04 6.02 10.1 10.08 100.67 100.33 101.00 100.80 5 4 14 3.98 3.97 13.96 13.97 99.50 99.25 99.71 99.79 6 3 6 3.04 3.04 6.02 6.03 101.33 101.33 100.33 100.50 7 5 5 5.05 5.07 4.97 4.98 101.00 101.40 99.40 99.60 8 10 6 9.97 9.97 6.09 6.07 99.70 99.70 101.50 101.17 MEAN 100.46 100.43 100.33 100.34 S.D 0.722 0.805 0.729 0.666 R.S.D % 0.719 0.802 0.727 0.664 *Average of three determinations ** Corresponding to their ratio in pharmaceutical formulation

Table 2: Results obtained for the analysis of binary mixtures of MOX and (validation set) by the multivariate spectral analysis methods.