Fig. 6From: Sustainable eco-friendly ratio-based spectrophotometric and HPTLC-densitometric methods for simultaneous analysis of co-formulated anti-migraine drugs with overlapped spectra3D HPTLC- densitogram of ASP (10–200 µg/band) and MET (1- 45 µg/band), using cyclo-hexane: methanol: methylene chloride (1:4:1, v/v/v) with UV detection at 270 nmBack to article page