Development and Validation of a Liquid Chromatography-Mass Spectrometry Assay for Determination of Cromolyn Sodium in Skin Permeation Studies

Figure 2

Chromatogram showing (a) pure 0.1 μg/mL CS in PBS (b) receptor solution of PBS in the blank in vitro permeation study after 24 h set up with TIC1 = m/x 467 and TIC2 = m/z 379 Abbreviations: CS, cromolyn sodium; PBS, phosphate buffered saline; TIC, total ion chromatogram.

(a)

(b)