Abstract:A NIR-chemometric method for direct quantitative determination of diclofenac sodium and two major excipients (matrixforming excipient and diluent) in sustained release, inert matrix type tablets was developed. The 26 tablet batches were prepared according to an experimental design. The NIR spectra of samples were recorded in the transmittance mode and the spectral ranges were selected using Principal Component Analysis (PCA), scores plot and loadings plot. Multiple preprocessing methods were tested and 6 multi… Show more
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