Research Article

Development and Validation of Stability-Indicating RP-UPLC Method for Simultaneous Determination of Related Substances of S(−)Amlodipine and S(−)Metoprolol Succinate in Fixed Dose Combination Tablet Dosage Form

Table 7

Results of linearity (correlation coefficient).

AnalyteCorrelation coefficient

S(−)Metoprolol0.99963
S(−)Amlodipine0.99950
Metoprolol Succinamide impurity0.99967
Amlodipine related compound-A0.99959