R. Coronea Borealis vs Nylon Spectrum

R. Coronea Borealis light curve from 1915 to 1925 which is recognizable as the band pattern of a nylon type polymer, or that of a secondary amide. Fig 1B is the spectrum of a nylon for comparison. The signaure bands are the cluster between 6 and 7 microns, and 3.0 - 3.5. The band intensities are comparable in Fig 1A and 1B.