Baseline corrected infrared spectra for ((5-Isopropyl-2-methylcyclohexyl)sulfonylmethyl)benzene measured using a pressed KBr disk. The red curve illustrates the original spectrum, the dotted red line is the baseline calculated using the method described in the work of He et al. (𝜆 = 3.0x10 5 , 𝜆 1 = 1.0x10 -3 and p = 0.04), and the black spectrum is the corrected spectrum. (B) The baseline corrected IR spectra of 2-((pyridin-2-ylamino)methylene)malononitrile measured using a pressed KBr disk. These spectra have not yet been normalized to sum to unity.