Simultaneous Determination of Over-the-Counter Pain Relievers in Commercial Pharmaceutical Products Utilizing Multivariate Curve Resolution-Alternating Least Squares (MCR-ALS) Multivariate Calibration Model

Table 2

Concentration matrix (μg/mL) used for the validation set of the studied drugs.

Mixture	PAR	ASA	CAF	NPX	IPF
1	3.5	0.5	2.0	2.0	8.5
2	3.5	2.0	1.0	2.0	5.0
3	1.0	2.0	3.0	1.5	15.0
4	1.0	15.0	1.5	3.0	8.5
5	6.0	5.0	3.0	2.0	5.0
6	2.0	15.0	2.0	1.5	5.0
7	6.0	8.5	1.5	1.5	12.0
8	3.5	5.0	1.5	2.5	15.0
9	2.0	5.0	2.5	3.0	12.0
10	2.0	12.0	3.0	2.5	8.5
11	5.0	15.0	2.5	2.0	15.0
12	6.0	12.0	2.0	3.0	15.0
13	5.0	8.5	3.0	3.0	2.0
14	3.5	15.0	3.0	1.0	12.0
15	6.0	15.0	1.0	2.5	2.0