Fig. 3From: A green TLC densitometric method for the simultaneous detection and quantification of naphazoline HCl, pheniramine maleate along with three official impuritiesTLC chromatogram of 100 µg band−1 PHN after H2O2 treatment; Rf ≈ 0.49 for PHN & ≈ 0.32 for its oxidative degradationBack to article page