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

Figure 4

The characteristic images for CPM at 6032 cm⁻¹, (a) upper-left region, (b) upper-right region, (c) lower-left region, (d) lower-right region, and (e) middle region on the tablet surface.

(a)

(b)

(c)

(d)

(e)