% Impurity & Amount recovered in μg/mL                                         Paracetamol                       Ibuprofen   4-Amino phenol 4-Chloro acetanilide          Impurity-B         Impurity-J   A P A P A P A P LOQ 108.2 0.0541 109.2 0.0546 90.2 0.0451 107.8 0.0539 106.2 0.0531 108.2 0.0541 91.3 0.0457 105.2 0.0526 93.5 0.0468 101.2 0.0506 97.8 0.0489 90.2 0.0451 98.2 0.0491 94.2 0.0471 102.3 0.0512 108.2 0.0541 95.4 0.0477 93.5 0.0468 107.2 0.0536 102.9 0.0515 101.2 0.0506 102.3 0.512 105.2 0.0526 106.2 0.0531 % RSD 5.8 6.6 7.2 6.5 A-Accuracy; P-Precision (Amount recovered in μg/mL)

Table 5: Precision and Accuracy at LOQ level.