Fig. 4From: In situ green analytical methods for the rapid and sensitive determination of a newly launched orphan anticancer drug; Tigecycline in infusion bags: comparative studyAbsorption (a) and its first derivative (b) spectra of 100 µg/ mL TIG in methanol, (c) Absorption spectra of 40 µg/mL TIG in 0.1 M HCl (---) and in 0.1 M NaOH (__), (d) the difference absorbance spectrum and (e) its corresponding first derivative spectra in 0.1 M HCl against its solution in 0.1 M NaOHBack to article page