Rapid Discrimination of Chlorpheniramine Maleate and Assessment of Its Surface Content Uniformity in a Pharmaceutical Formulation by NIR-CI Coupled with Statistical Measurement

<table>Raw and preprocessed spectra. (a) Raw spectra, (b) spectra preprocessed by SG smoothing and normalizing, and (c) spectra preprocessed by SG smoothing and first derivative of three major ingredients (CPM, pregelatinized starch (STA), and microcrystalline cellulose (MCC)).</table>

Journal of Spectroscopy

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Figure 2

Figure 2: Rapid Discrimination of Chlorpheniramine Maleate and Assessment of Its Surface Content Uniformity in a Pharmaceutical Formulation by NIR-CI Coupled with Statistical Measurement 

Figure 2 | Rapid Discrimination of Chlorpheniramine Maleate and Assessment of Its Surface Content Uniformity in a Pharmaceutical Formulation by NIR-CI Coupled with Statistical Measurement 