Comparative study between derivative spectrophotometry and multivariate calibration as analytical tools applied for the simultaneous quantitation of Amlodipine, Valsartan and Hydrochlorothiazide

- Comparative study between chemometrics and univariate derivative spectrophotometry.
- Reported methods need preparation, sophisticated instruments and expensive solvents.
- First spectrophotometric and chemometric methods developed for this combination.
- Wide spread of spectrophotometers makes it applicable in QC laboratories.