Validated Stability Indicating RP-HPLC Method for Simultaneous Estimation of Codeine Phosphate and Chlorpheniramine Maleate from Their Combined Liquid Dosage Form

Table 8

System suitability parameters.

S. no.	Parameter	CP	CPM
1	Retention time (min)	3.47	9.45
2	Peak asymmetry	1.0	1.0
3	Theoretical plates	11100	17692
4	Resolution	3.05	7.78
5	Limit of detection (LOD), 𝜇g/mL	2.263	0.756
6	Limit of quantification (LOQ), 𝜇g/mL	6.859	2.293